Can anyone tell me what a Model 66 in S/S is worth?
4" barrel, It's condition is very good to excellent.

It is a Chicago Police Dept. 125 yr commemorative edition in a wooden display case.

Thanks in advance.

Deuce

I'll take a stab and say at least $375-$400 or higher if it's in excellent condition.
Go over to S&W Forum for a more accurate appraisal.

ON an auction website, maybe twice that. Especially if a Chicago cop wants it. In some parts of the US, a standard M66 goes for that...(but not in Western-CO).