I have one in a double 410,I have had it for probably 25 yrs it was used and I gave a guy at work $40 for it.Years ago I was offered $3000 for it but I kept it for I didn' t need to seel it.I haven' t used it in years but it is a very good squirrel gun.
I have no idea what it is really worth probably not much but I wouldn' t sell it .