I'm confused about Model 50 serial numbers.
It's easy to get confused about the Model 50.
Mine is from the roving J serial series you mention.
Dr. Jinks' book has more details than the SCSW, but it's still
easy to get confused. He says S&W developed the Model 50 in
1965, but in his letter for my Model 50 Dr. Jinks says 1962 was
the year. He adds total Model 50 production was 1,132. I've
never seen one outside the range you mentioned, and Dr. Jinks
says 20 of those "did not ship."
Still in 1966 the company made more than 1,000 Chiefs Special
Target models stamped Model 36.
Best not to lose sleep over it. If we ever see one outside the
known serial range we can begin altering our thinking.
Every thread needs photos.