That PTO closely resembles one I had on a heavy haul wrecker. It powered a 35 ton belly winch, and it had forward and reverse direction capability. I believe the fwd and rev ratios were slightly different due to different tooth count gears inside the PTO. I don't remember a PTO brand name or part number- - - -I managed that wrecker service in the late 1990s.

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!