The are peculiar sample chips. They appear to advertise the chip material for the Spaulding Fibre Company. One side is marked - Spaulding Fibre Company, and the other side is marked Armite Spauldite Fibre. I am not aware of any other chips that were made of this material. I only have these two and they are $20 each. Buyer to pay for postage. Please email me at vidpkr@charter.net if you are interested.