Aceman58, the matte black 586-3 was a run of approximately 1,969 in the 4 inch. Product code 103591. April of 1989 IIRC.

Very nice sixgun. I've got the limited edition blackened stainless 686-3 in 4 inch. One of my favorite L-frames. I'm always watching for a 4 inch matte 586 to compliment it. Regards 18DAI

Edited to add: I paid $650 for my blackened 4 inch 686-3, with no box or docs. I would expect your matte 586 to bring at least that much. More if box and docs are present.