add unch after the B and it can be a forum special revolver.I learn something new here every day!
I couldn't figure out what OHB stood for, so I did some searching and found a completed listing on GI with this photo:
S & W Model 68
Apparently, OHB doesn't stand for anything. It was simply their way of defacing the CHP marking. It looks they did a really nice job of over stamping, but it's a shame they didn't just leave it alone. It would have had more collector interest and I'm sure they'd have records showing that it was decommissioned.
