Hi Rob
That's the ticket! Thanks very much.
I was trying to run down its origin and had a feeling it was an Airborne item like the converto dump.
Not so. USAF Trailer for a BT-400 Herman Nelson.
Aerotech/Herman Nelson in Winnipeg still makes the trailers but for better heaters. Cool.
https://www.hermannelson.com/product...-pintle-hitch/
Many thanks, Rob.
regards
Darrell