English carrier markings

[Justin Pollard]

Hello All,
Finally went and picked up my English carrier a couple of weeks ago that i bought from another MLU member.

It is a sentinel 3" mortar carrier. T58540.

It has another number below that, it is in white and the same size as the T number. it has the DD arrow, ^162177. Any ideas?.

Also does anyone know if the track displacement cam is the same as OZ ones?.

Thanks in advance.

Justin.