The NIB 4506-1's are VERY scarce lately. There have been a few lightly used 4506's on Gunbroker in the last month or so. The vast majority though appear to have had rather rough lives.
I found a 4506 in a remote area of VA yesterday and slapped it in layaway. A dash 3 with adjustable night sights in fairly new condition.
Unlike the 4506-3 I picked up in the Cabela's deal last month, this one yesterday has a MIM hammer. I'm going to replace it with a blue forged hammer when I get it out of layaway.
One way to track down a LNIB 4506 is to contact your area S&W LEO rep. They can see if any are "in the vault" and also check local distributors for you........after they pester you to buy an M&P instead.
I'll keep any eye out locally for you Tim Nagel. Regards 18DAI.