Found this carrier picture in a Old Book.

[tankbarrell]

Originally Posted by RichardT10829

On the rear mudguard i can see T6751- the last digit is unreadable
i await to be shot down kids

T6751* was a Valentine. T67221-T67865 being Valentine II, V and bridgelayer built by Metro Cammell.

However, T5751* was Ford built Universal MkI.

[Lynn Eades]

Its a 3" Mortar carrier. nothing else carries the crank handle up where it is, at the top of the rear plate.
Nigel's Vol. 2, page 68, shows one with the towing attachment.
How about T167??? (up to T167581)