Thank you - I thought it was contemporary after reading an article from BNJ
1. Contemporaneous issues. These retained the official designs and legends and bore genuine dates of issue corresponding to those of the actual coins, viz. 1787-97 and from one issuer 1798. About a dozen Birmingham firms struck and issued them, and in most cases signed them with names or initials (which were their own1 —not the bogus initials found on the 'evasion' counterfeit halfpennies and farthings made during this period). Most were of brass. To avoid confusion with the gold prototypes, some had scalloped edges or were undersized and/or made of copper.