How much does a .999 fine silver Silver Issue 2 Gr 1776 coin or token cost and what is the history of it?

I have a 2 gram one sided silver token with an eagle on the front that sais silver issue 2 gr fine silver .999 1776 with a serial code at the bottom, b528178 that could be what you have. i asked a dealer about it and he told me that they were minted by a private mint in the 1970s or 80s as silver investment pieces for around either $15 or $50 dollars, I cant remember which. I'm not sure what one would be worth now but it is worth at least its silver content and a dealer or collector could probably give you more.