"I think quantities listed are a good guess only."

Why do you think they are a good guess only?

It is the actual Hunt record of the actual amount made and shipped in 1949.

That said: Could there have been further orders. Yes, we know from chip finds there are sometimes more found than are on order cards. There are usually 2nd and 3rd order cards but we both know in some cases re-orders are not in the old records. I tend to doubt it in this case as it was a small place.

That said: Neither you nor I really care how many made. We just want one of the chips.