SEC Filing Document

Company: Jones Ventures INTL Acquisition1 Corp
Ticker: 
CIK: 2129056
Filing Type: S-1
Document Type: EX-5.1
Date Filed: 2026-05-15
Accession Number: 0001213900-26-057072
Exchange: 
SIC Code: 6770
SIC Description: Blank Checks
URL: https://www.sec.gov/Archives/edgar/data/2129056/000121390026057072/ea028579202ex5-1.htm

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The execution, delivery and performance of the Unit Certificate and the Rights Documents have been authorised by and on behalf of the Company and, once the Unit Certificate and the Rights Documents have been executed and delivered by any director or officer of the Company, the Unit Certificate and the Rights Documents will be duly executed and delivered on behalf of the Company and will constitute the legal, valid and binding obligations of the Company enforceable in accordance with their terms. 4 Qualifications The opinions expressed above are subject to the following qualifications: 4.1 The obligations assumed by the Company under the Documents will not necessarily be enforceable in all circumstances in accordance with their terms. In particular: (a) enforcement may be limited by bankruptcy, insolvency, liquidation, reorganisation, readjustment of debts or moratorium or other laws of general application relating to protecting or affecting the rights of creditors and/or contributories;

(b)	enforcement may be limited by general principles of equity. For example, equitable remedies such as specific
performance may not be available, inter alia , where damages are considered to be an adequate remedy;

(c)	where obligations are to be performed in a jurisdiction outside the Cayman Islands, they may not be enforceable
in the Cayman Islands to the extent that performance would be illegal under the laws of that jurisdiction; and

(d)	some claims may become barred under relevant statutes of limitation or may be or become subject to defences
of set off, counterclaim, estoppel and similar defences.

4.2	To maintain the Company in good standing with the Registrar of Companies under the laws of the Cayman
Islands, annual filing fees must be paid and returns made to the Registrar of Companies within the time frame prescribed by law.

4.3	Under Cayman Islands law, the register of members (shareholders) is prima facie evidence of title
to shares and this register would not record a third party interest in such shares. However, there are certain limited circumstances where
an application may be made to a Cayman Islands court for a determination on whether the register of members reflects the correct legal
position. Further, the Cayman Islands court has the power to order that the register of members maintained by a company should be rectified
where it considers that the register of members does not reflect the correct legal position. As far as we are aware, such applications
are rarely made in the Cayman Islands and for the purposes of the opinion given in paragraph 3.2, there are no circumstances or matters
of fact known to us on the date of this opinion letter which would properly form the basis for an application for an order for rectification
of the register of members of the Company, but if such an application were made in respect of the Class A Ordinary Shares, then the validity
of such shares may be subject to re-examination by a Cayman Islands court.

4.4	In this opinion letter the phrase “non-assessable” means, with respect to the issuance of shares,
that a shareholder shall not, in respect of the relevant shares and in the absence of a contractual arrangement, or an obligation pursuant
to the memorandum and articles of association, to the contrary, have any obligation to make further contributions to the Company’s assets
(except in exceptional circumstances, such as involving fraud, the establishment of an agency relationship or an illegal or improper purpose
or other circumstances in which a court may be prepared to pierce or lift the corporate veil).

We hereby consent to the filing of this opinion
letter as an exhibit to the Registration Statement and to the references to our firm under the headings “Legal Matters”, “Risk
Factors”, “Shareholders’ Suits” and “Enforcement of Civil Liabilities” in the prospectus included in the Registration
Statement. In providing our consent, we do not thereby admit that we are in the category of persons whose consent is required under section
7 of the Act or the Rules and Regulations of the Commission thereunder.

We express no view as to the commercial terms
of the Documents or whether such terms represent the intentions of the parties and make no comment with regard to warranties or representations
that may be made by the Company.

The opinions in this opinion letter are strictly
limited to the matters contained in the opinions section above and do not extend to any other matters. We have not been asked to review
and we therefore have not reviewed any of the ancillary documents relating to the Documents and express no opinion or observation upon
the terms of any such document.

This opinion letter is addressed to you and may
be relied upon by you, your counsel and purchasers of Units pursuant to the Registration Statement. This opinion letter is limited to
the matters detailed herein and is not to be read as an opinion with respect to any other matter.

Yours faithfully

/s/ Maples and Calder (Cayman) LLP

Maples and Calder (Cayman) LLP

Jones Ventures INTL Acquisition1 Corp

PO Box 309, Ugland House

Grand Cayman

Cayman Islands

To:	Maples and Calder (Cayman) LLP

PO Box 309, Ugland House

Grand Cayman

Cayman Islands

Jones Ventures INTL Acquisition1 Corp (the
“Company”)

I, the undersigned, being a director of the Company,
am aware that you are being asked to provide an opinion letter (the “Opinion”) in relation to certain aspects of Cayman
Islands law. Unless otherwise defined herein, capitalised terms used in this certificate have the respective meanings given to them in
the Opinion. I hereby certify that:

1	The Memorandum and Articles remain in full force and effect and are unamended.

2	The Company has not entered into any mortgages or charges over its property or assets other than those
entered in the register of mortgages and charges of the Company.

3	The Resolutions were duly passed in the manner prescribed in the Memorandum and Articles (including, without
limitation, with respect to the disclosure of interests (if any) by directors of the Company) and have not been amended, varied or revoked
in any respect.

4	The authorised share capital of the Company is US$55,500 divided into 500,000,000 Class A ordinary shares
of a par value of US$0.0001 each, 50,000,000 Class B ordinary shares of a par value of US$0.0001 each and 5,000,000 preference shares
of a par value of US$0.0001 each. The issued share capital of the Company is 7,666,667 Class B ordinary shares, which have been duly authorised
and are validly issued as fully-paid and non-assessable.

5	The shareholders of the Company (the “ Shareholders ”) have not restricted the powers of
the directors of the Company in any way.

6	The directors of the Company at the date of the Resolutions and at the date of this certificate were and are as follows: Shlomo Cohen,
Alan F. Hill, Harsha Agadi, David Jay Horin and Nathan Church Hubbard.

7	The minute book and corporate records of the Company as maintained at its registered office in the Cayman
Islands and made available to you are complete and accurate in all material respects, and all minutes and resolutions filed therein represent
a complete and accurate record of all meetings of the Shareholders and directors (or any committee thereof) of the Company (duly convened
in accordance with the Memorandum and Articles) and all resolutions passed at the meetings or passed by written resolution or consent,
as the case may be.

8	Prior to, at the time of, and immediately following the approval of the transactions contemplated by the
Registration Statement, the Company was, or will be, able to pay its debts as they fell, or fall, due and has entered, or will enter,
into the transactions contemplated by the Registration Statement for proper value and not with an intention to defraud or wilfully defeat
an obligation owed to any creditor or with a view to giving a creditor a preference.

9	Each director of the Company considers the transactions contemplated by the Registration Statement to
be of commercial benefit to the Company and has acted in good faith in the best interests of the Company, and for a proper purpose of
the Company, in relation to the transactions which are the subject of the Opinion.

10	To the best of my knowledge and belief, having made due inquiry, the Company is not the subject of legal,
arbitral, administrative or other proceedings in any jurisdiction and neither the directors nor Shareholders have taken any steps to have
the Company struck off or placed in liquidation. Further, no steps have been taken to wind up the Company or to appoint restructuring
officers or interim restructuring officers, and no step has been taken to appoint a receiver in relation to any of the Company’s property
or assets.

11	To the best of my knowledge and belief, having made due inquiry, there are no circumstances or matters
of fact existing which may properly form the basis for an application for an order for rectification of the register of members of the
Company.