Tokens from Heck's

I have a small rope with 18 Heck's tokens, 9 zinc and 9 brass. The zinc ones I found on Numista (https://en.numista.com/catalogue/pieces138974.html), but the brass ones with 1947 and 12 1/2 I couldn't found.
Are they rare?

I wouldn't imagine so.

I don't know much about these store tokens, but if you have a bracelet with 9 of them, I don't think they're that rare; besides, even if they are rare in terms of surviving mintage, their token status means a relatively limited buyers' market, and they're probably worth what someone will pay you for them.