They haven't. Special orders are still an option.
your Winchester model 12 shotgun was made in 1949.with that said your model 12 with no special options would be worth between 500-700 dollars based on condition of the shotgun.
Either a factory mistake or a special order. Seek the services of a professional appraiser.
A shotgun made in Belgium
50-350 usd
look under the forearm
50-500 usd
Your Winchester was built in 1913. The value depends on condition and any factory special features. Have it appraised by a professional.
You need the services of a gunsmith
You will have to call Browning to find out.
I am trying to find out the value of my Browning Acier Special C 12 guage Shotgun KG 8663 Serial number 307368
Winchester.