Simpson Ltd prefix letters
 

I know that the "C" on the Simpson web site stands for consignment. Can anyone tell me what the "D" and "Z" prefixes stand for on each pistol number for sale?

They go abroad a lot to buy firearms to sell at their store. Maybe they use those 'letters' to designate what they are selling online? You might email them for your answers.

I found out that "C"= a consignment gun, "D"= their own gun and "Z"= is an import, usually with an import stamp.

There is also an "S" but I don't know what it means.

An S on the chamber of a KH P08 indicates early 1936 production. TH