The Irish comes commercii, or, Trader's companion
Subtitle: containing I. exact and useful tables, shewing the value of any quantity of goods or wares ready cast up, more adapted to merchants use, than any other extant ... II. Tables of exchange. In two parts. 1. English money exchanged into Irish. 2. Irish money exchanged into English ... III. tables of commission at the several rates mostly used in Ireland. IV. an index to interest, containing tables of simple interest, at 4, 5, and 6 per cent. from 1 day to 30 days; for 40, 50, 60, 70, 80, 90 days; for 3, 6, and 9 months; and for 1 year. To all which is prefixed, a table of guineas, from 1 to 500, carefully corrected. Together with a table of the number of yards in the several scores of linen, from 1 to 150
By: Calculated mostly by Edward Hatton ...
Contributors: Watson, John, -1769
Edition: 6th ed.
Publisher: Printed by S. Watson and F. Smith
Published: 1781
Place of publication: Dublin
Language: eng
Number of pages: 263
Subjects: Ready-reckoners; Money; Tables; Interest
Other titles: Trader's companion
Notes: Attributed to Edward Hatton--Cf. NUC pre-1956.

"The tables of exchange, commission, and coin, calculated originally; all the other tables cast up in manuscript by the late John Watson, bookseller."

Part II, "Tables of exchange," has separate title page.

London editions have title: Comes commercii, or, Trader's-companion.

Signatures: A-L¹².