Well I know there are plenty C&S experts on here with Rich being at the top of the chain. If USPC would have made custom C&S chips for Joe, which they obviously did, would they have kept a few and put them on display in their museum so they had a record? It is very feasible that they made some of these chips for Joe's customers. I wouldn't say there were an abundance made since Joe was in business during the depression days so cost would have been a priority for 99% of the customers. I would say they wouldn't have kept any chips themselves and put them on display because these chips were Joe's customers and privacy was important. What say you?