It's not a porkchop so it's not an 11, 12, 14 or 15. He said it's a .357 do that rules out 8-2 and 9-2. The 14-2 is the service model and the 15-2 is the target model non-porkchop in .357.
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http://www.danwessonforum.com/supporters/models/revolvers/ A good place to get some background info before you decide.
The price is so cheap, I don't think I could go wrong.