BRASS Fire Truck or Hydrant 5-1/2" threaded & bayonet 4 point coupling

Description

BRASS Fire Truck or Hydrant 5-1/2" threaded & bayonet 4 point coupling
Amazing heavy coupling.
One end is threaded to fit a 5-1/2 inch ID hydrant cap.
The other end has 4 flanges that appear to be a quick mount coupling.
Solid brass weighing 5 pounds 2 inches
Please see pictures for more details
I have searched and can not find a similar piece - I would appreciate knowing the actual name if you know it.
See my other auction for a cast iron fire hydrant cap
I have posted several pictures for your inspection & assessment
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Shipping weight 6 pounds
Shipped in Priority Flat Rate Medium Box - probably best price.
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