Seems a little high to me although I haven't seen any others sold recently. As a rough comparison, I picked up a pre-model 33 last weekend which looked like it just came out of the factory (also no box or papers) for $420. That is a 38 S&W instead of 32 L and is 1954 or so production versus the 31-1 at around 1970 (I think). I'd like a 31 or pre-31 at around $400 but I'd have a tough time with $600 without box and papers.