1 All section references are to the Internal Revenue Code,

as amended, and all Rule references are to the Tax Court Rules of

Practice and Procedure.

T.C. Memo. 1999-28

UNITED STATES TAX COURT

 TIM R. CASANOVA AND SAN JUANITA VILLAREAL, Petitioners v. 

 COMMISSIONER OF INTERNAL REVENUE, Respondent

 Docket No. 10605-98. Filed February 1, 1999.

Tim R. Casanova and San Juanita Villareal, pro sese.

Melinda G. Williams and James G. Macdonald, for respondent.

MEMORANDUM OPINION

COHEN, Chief Judge: This case was assigned to Special Trial

Judge Robert N. Armen, Jr., pursuant to the provisions of section

7443A(b)(4) and Rules 180, 181, and 183.1 The Court agrees with

and adopts the opinion of the Special Trial Judge, which is set

forth below.
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OPINION OF THE SPECIAL TRIAL JUDGE

 ARMEN, Special Trial Judge: This matter is before the

Court on respondent's Motion to Dismiss for Lack of Jurisdiction. 

The issue for decision is whether the petition was filed within

the 90-day period prescribed in section 6213(a).

Background

On October 23, 1997, respondent mailed a notice of

deficiency to Tim R. Casanova and San Juanita Villareal

(petitioners) determining a deficiency in, and an accuracyrelated penalty on, their income tax for 1993. On January 21,

1998, petitioners filed an imperfect petition with the Court,

assigned docket No. 1418-98. By Order dated January 27, 1998,

the Court provided petitioners with a blank form petition and

directed them to file a proper amended petition and pay the

required $60 filing fee in docket No. 1418-98.

On February 19, 1998, respondent mailed a notice of

deficiency to petitioners determining deficiencies in, and

accuracy-related penalties on, their income taxes for 1994, 1995,

and 1996 as follows:

Accuracy-Related Penalty

Year Deficiency Sec. 6662(a) 

1994 $19,833 $3,893.20

 1995 14,715 2,906.00

 1996 12,217 2,443.40

On February 25, 1998, the Court received an envelope from

petitioners containing the following documents pertaining to

docket No. 1418-98: (1) A partially completed form amended

petition; (2) 3 copies of a designation of place of trial
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2 Markings on the amended petition filed Mar. 25, 1998,

reveal that the document is the same form amended petition that

the deputy clerk returned to petitioners by letter dated Feb. 26,

1998.

designating Corpus Christi, Texas, as the place of trial; and (3)

a check in the amount of $60. The envelope in question bore a

U.S. Postal Service postmark date of February 20, 1998, and

registered mail No. R773-219-004. 

By letter dated February 26, 1998, the deputy clerk of the

Court (the deputy clerk) returned the above-described amended

petition to petitioners and informed them that the amended

petition had not been filed because it was incomplete. The

deputy clerk further informed petitioners that the Court does not

conduct trial sessions in Corpus Christi, Texas, and that

petitioners would have to select an alternative trial site from

the list that was enclosed with the letter. Finally, the deputy

clerk informed petitioners that their $60 check had been applied

to docket No. 1418-98 in satisfaction of the filing fee.

 On March 25, 1998, petitioners filed a proper amended

petition in docket No. 1418-98 and a designation of place of

trial designating San Antonio, Texas, as the place of trial.2 In

addition, petitioners elected to have their case tried pursuant

to the small tax procedures under section 7463. Accordingly, the

docket number for the case was changed to docket No. 1418-98S.

In early June 1998, petitioners filed Postal Service Form

1000 (Domestic Claim or Registered Mail Inquiry) with the U.S.

Postal Service for the purported purpose of tracing the delivery
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3 The Tax Court does not have any personnel positions with

the title "90-day clerk". We surmise that petitioners may have

spoken with someone in respondent's office.

of registered mail No. R773-219-004. On June 8, 1998, the clerk

of the Court executed the Postal Service Form 1000 and

acknowledged receipt of the item of registered mail No. R773-219-

004 by checking the "Yes" box under entry No. 13a, which states:

"Did you receive items listed above?". The Court retained a copy

of the Postal Service Form 1000 in the correspondence folder in

docket No. 1418-98S.

 On June 9, 1998, petitioners submitted an "Affidavit" to the

Court, which the Court filed as a petition for redetermination,

assigned docket No. 10605-98, contesting the notice of deficiency

for the years 1994, 1995, and 1996. The petition arrived at the

Court in an envelope bearing a U.S. Postal Service postmark date

of June 8, 1998. The petition includes allegations that on

February 20, 1998, petitioners' employee, Rosemary Vela, mailed a

petition to the Court in an envelope bearing registered mail No.

R773-219-004 contesting the notice of deficiency for 1994, 1995,

and 1996. The affidavit further states that, on June 1, 1998,

petitioners were informed by the Tax Court's "90-day clerk" that

the Court had not received the petition, prompting petitioners to

initiate a "tracer" on registered mail No. R773-219-004.3 At the

time that the petition was filed, petitioners resided in Corpus

Christi, Texas.
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 In response to the petition, respondent filed a Motion to

Dismiss for Lack of Jurisdiction on the ground that the petition

was not filed within the 90-day filing period prescribed in

section 6213(a) or section 7502. On August 7, 1998, petitioners

filed an objection to respondent's motion to dismiss repeating

the allegations contained in the petition. On August 31, 1998,

petitioners filed a supplemental objection, again repeating the

allegations contained in the petition.

By Order dated September 14, 1998, respondent's motion to

dismiss was calendared for hearing at the Court's motions session

in Washington, D.C., on October 14, 1998. By Order dated

September 25, 1998, the parties were directed to provide the

Court with evidence of the date of receipt by petitioners of the

notice of deficiency for 1994, 1995, and 1996.

On October 5, 1998, petitioners filed a response to the

Court's Order dated September 25, 1998. Petitioners' response

was not responsive to the Court's order. Nonetheless,

petitioners' response did include a number of attachments,

including a copy of Postal Service Form 1000 that includes

markings different from the copy of Postal Service Form 1000

retained in the Court's correspondence folder. In particular, on

the copy of the Postal Service Form 1000 submitted by

petitioners, the "Yes" box that the Court checked under entry No.

13a is obliterated and the "No" box is checked. The initials MLP

appear next to entry No. 13a.
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4 Postal Service Form 3849 indicates that the notice of

deficiency was received by a Linda Perez, whom we understand to

be petitioners' employee.

 This matter was called for hearing at the Court's motions

session in Washington, D.C., on October 14, 1998. Counsel for

respondent appeared at the hearing and provided the Court with a

copy of Postal Service Form 3849 demonstrating that the notice of

deficiency for 1994, 1995, and 1996 was delivered on February 20,

1998.4 There was no appearance at the hearing by or on behalf of

petitioners. During the hearing, the Court made the following

exhibits part of the record in this case: (1) The envelope that

petitioners mailed to the Court on February 20, 1998, bearing

registered mail No. R773-219-004; (2) the deputy clerk's

February 26, 1998, letter to petitioners; and (3) the Court's

retained copy of Postal Service Form 1000.

 By Order dated October 14, 1998, petitioners were given the

opportunity to file a second supplemental objection to

respondent's motion. On November 13, 1998, petitioners filed a

second supplemental objection to respondent's motion in which

they denied receiving the deputy clerk's February 26, 1998,

letter and suggested that the Court had mistakenly filed the

contents of the envelope that they mailed to the Court on

February 20, 1998, under docket No. 1418-98S.

This matter was called for further hearing at the Court's

motions session in Washington, D.C., on November 25, 1998. 

Counsel for respondent appeared at the hearing and presented
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argument in support of respondent's motion to dismiss. There was

no appearance at the hearing by or on behalf of petitioners.

During the hearing, the Court made a number of exhibits part of

the record in this case--exhibits pertaining to the nature and

timing of significant developments in docket No. 1418-98S.

By Order dated December 1, 1998, the Court served

petitioners with the transcript of the November 25, 1998, hearing

and the exhibits that were made a part of the record at that

time. In addition, petitioners were provided with the

opportunity to file a response with the Court.

On December 23, 1998, petitioners filed a response with the

Court in which they state that they recently discovered, contrary

to prior statements, that they did receive the deputy clerk's

February 26, 1998, letter. Petitioners' response includes an

explanation regarding the initials "MLP" appearing on

petitioners' copy of Postal Service Form 1000. Petitioners'

response states in pertinent part as follows:

Reason for MLP on document. Postal Service Worker

stated that #13 on PS Form 1000 was not [to] be filled

out by Petitioner but only by the respondent. Mistake

was made by [petitioners'] employee, Maria Linda Perez. 

Postal Employee Arnold Padron told Ms. Perez to scratch

off the mistake and put her initials by it so that the

court would not assume that the post office tampered

with the document.

Discussion

This Court's jurisdiction to redetermine a deficiency

depends upon the issuance of a valid notice of deficiency and a

timely filed petition. Rule 13(a), (c); Monge v. Commissioner,
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93 T.C. 22, 27 (1989); Normac, Inc. v. Commissioner, 90 T.C. 142,

147 (1988). Section 6212(a) expressly authorizes the

Commissioner, after determining a deficiency, to send a notice of

deficiency to the taxpayer by certified or registered mail. It

is sufficient for jurisdictional purposes if the Commissioner

mails the notice of deficiency to the taxpayer's "last known

address". Sec. 6212(b); Frieling v. Commissioner, 81 T.C. 42, 52

(1983). The taxpayer, in turn, has 90 days (or 150 days if the

notice is addressed to a person outside of the United States)

from the date the notice of deficiency is mailed to file a

petition in this Court for a redetermination of the deficiency. 

Sec. 6213(a).

There is no dispute that respondent mailed a notice of

deficiency to petitioners for the taxable years 1994, 1995, and

1996 on February 19, 1998. Further, an employee of petitioners

received the notice of deficiency on February 20, 1998. The 90-

day period for filing a timely petition with the Court contesting

the notice of deficiency expired on Wednesday, May 20, 1998.

On June 9, 1998, the Court received an "Affidavit" from

petitioners, which the Court filed as a petition for

redetermination for the taxable years 1994, 1995, and 1996. 

Although petitioners contend that the envelope that their

employee mailed to the Court by registered mail on February 20,

1998, contained a petition contesting the notice of deficiency at

issue, the record shows otherwise. In particular, the contents

of the envelope that petitioners mailed to the Court on February
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20, 1998, pertained solely to docket No. 1418-98. In short,

there is no evidence in the record that petitioners mailed a

petition to the Court contesting the notice of deficiency for

1994, 1995, and 1996, on or before May 20, 1998. Under the

circumstances, we are obliged to dismiss this case for lack of

jurisdiction on the ground that the petition was not filed within

the 90-day period prescribed in section 6213(a). See Phirman v.

Commissioner, T.C. Memo. 1991-431.

To reflect the foregoing,

 An order granting respondent's 

Motion to Dismiss for Lack of 

Jurisdiction will be entered.