You forgot the serial number.
rc46661
Would need the serial number to answer.
when was this luger Mfg,Serial # 2869
Try this link: http://www.browning.com/customerservice/dategun/index.asp
1951
No serial number provided.
1912
Mfg 1975
That Winchester is mfg. 1958
If you have a Gov. Model .45 (1911) with the serial number 350268, it was mfg by Colt, and made somewhere between May-Oct, 24, 1918. It fell in the serial number range 290,000 to 450,000
Your browning sweet sixteen shotgun dates to the year 1954 with the serial number that you provided.