Marking on 1975 Colt DS?

[NCBeagle]

I just purchased a beautiful 1975 Detective Special. There is an "X" beneath the serial number in the crane area. I see no such marking on any of my other Colts from that year. Any idea what this means?

 

[Guillermo]

Old Fuff, who is an undeniable expert, said the following in another thread

It isn't part of the serial number, and I suspect it is either an inspector's stamp (they had human inspectors back then), or a sub-assembly mark, in which case the same "X" should be stamped on the inside of the crane.

In my opinion, if Fuff says it, you can take it to the bank

 

[NCBeagle]

Good deal. Thanks for digging up that old post. My question is answered.