springfield 12guage double barrel side by side

i just aquired a springfield side by side 12 guage shot gun. the only numbers on it are 9IR on all 3 pieces and 1500 on the right side. i wanna know when this gun was made. it has a 30 in barrel and double triggers. i know it is old but when did they stop making these? please send waht ever info to This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

I have a Stevens 12 ga. bouble barrel , two hammers and two triggers . the only markings are 'stevens a & t c9' it has numbers in about three places that are 37957 .What do i have and is it worth anything ??