Dasco tapered wedge DOE Wrench for trade

[crankshaftdan II]

Someone out there collects these wrenches???     This one is marked as 1/4 c.s.  x  3/16 nut w/#2 on center of beam--reverse side has a sq. window  Dasco  Z-23  sq. window on beam with both ends wedge/tapered I would imagine for tight areas.   Think I have only found one other s/o in my travels-several years back.   Looking for a ratchet trade or?????--Thanks for looking....Cranky