So two questions for me are: 1. is it a penny (based on the position of the middle prong on the trident and the N)? 2. Is the reverse die a copy of the Soho Britannia , or a modified Soho die sold by Taylor to Heaton. As Taylor acquired the tub of dies at the Soho auction following its closure in 1848, the options are it must have come from him after 1860, or undocumented dies must have left Soho before closure, or a second lot of dies was obtained by Heaton at the auction. Given Taylor was also striking tokens for various people, it would be surprising if he passed work on to a competitor, including the supply of dies.
 
	And as an afterthought - is the edge plain?