Mav. 88 (31023)
MV640xxX Label date 8/22/15 purchased Jun 2016
TR500 (52133)
VO325xxx Label date 02/22/2016 purchased Mar 2016
Label date was hard to read as it was over-written with gun option info, used a magnifying glass - think I have it right.
Interesting that both boxes have 2 packer numbers.
I finally heard back from Mossberg about my shotgun was made 3-30-1973.
I contacted a Jessica Ballesteros she is a customer service representative.
800-363-3555
My 930 SPX BW S/N is AF148XXX, date on the box is 3/11/2014
My 351K .22 S/N is not seen. I have no idea where it would be located. This gun was given to me by my father and it was given to him from a good friend. I have no other data on this one.