http://www.barrelexchange.com/srch_1.cfm?manuf=Franchi&ga=12+ga.&Submit=Search
Go to google and enter "20 gauge double barrel shotgun" then click the (images) button at the top of your screen. Then hit (search images).
the make of the shotgun is Daiwa model 500 it's a 12 gauge
You can find information for the 16 gauge Worthington Challenger single barrel shotgun at most gun stores and pawn shops. Many of these stores offer free appraisals and have knowledgeable clerks.
I have a double barrel 20ga 101.7 eastern arms what is it worth
Do an internet search with the words Brazil, shotgun and 20 gauge'
BLue Book of Gun Values
the value of a 1948 Stevens double barrel shotgun 16 gauge. Hammerless.
Try e-gunparts.com, Shotgun News, Gun List, do a web search on "shotgun stocks".
Value as a shooter. Find someone who collects this type and it may bring a small premium.
This would be an early H&R shotgun from 1905-1940, or thereabouts. The 36" barrel makes it more interesting.
A good place to try is gunbroker.com
SORRY, you will never find any because there are none available !