Not sure if they're incised with a "1" or a dash.

The chips are square edge and uniface.

There were chocolate-brown chips in the box as well; same manufacture but w/o the engraving.

I'm offering lots of one each (one green; one brown) for $3, along with a proper S.A.S.E. (a #10 envelope will not be accepted).

I have approx. 20 chips of each color.

I don't remember what all the original box read, but I do remember the term: "stone ground" -- whatever that means.

So, be the first on your block to own one each of these beautiful, vintage Catalin gamblng chips at a very affordable price...