Maker may not have started SN's with 0. Sometimes a maker producing a knock-off of another brand would start with a high SN to make it appear they had been selling a lot of guns. Oftentimes we misuse the term clone as well. A clone has to be identical in every feature, just not an original. If any part was changed, then technically it is not a clone.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra