My son's gun store just took this Model 12-3 in on consignment. I believe it's manufacture date was somewhere between 1977-1982 but I don't have the s/n...just this pic. Looks to be almost NIB with all the goodies. The asking price is $700...is that a reasonable price for this revolver? I'm not a big K-frame aficionado, and I'm not really interested in this piece, but it seems like a good deal and I have first right of refusal. Thoughts? Thanks.