Update for those interested.

The Tandy snaps on Ebay are a tad too long in the shank for the Heiser keeper strap, but the top snap cover is almost a perfect colour match...so using the coated brass snap from the link above and the Tandy snap cover listed on Ebay one gets an item that works well and has somewhat harder lift than the baby dot on the current model 21 Sullivan sheath and slightly less than the original Heiser snap.

The coated steel snap from the above listed site and the Tandy brown snap cover pretty much nails the project if one wishes to make everything indistinguishable from original...especially if one uses an early crafttool anvil to give a slightly flatter dome on the snap cover.

I opted for the brass snap and Tandy snap cover as I am not overly interested in collecting.


Regards.