When I worked for Athens, GA PD we had one, an old one, that never was shot and stayed in the Chief's closet. It was then decided to sell it, through the proper channels, of course, through auction. I no longer worked there when this happened, so all my info is hearsay, but interest in this gun was intense. A number of buyers flew in from all over and the gun sold for a big amount.
I toted one briefly in VN, very briefly. Heavy! The military ones were simplified in manufacture and to cut costs. Forgotten Weapons did an episode, said when WW2 broke out and the Govt bought them, they paid $200 each! That's a lot. About $3500 today.