Christ Wulf, I can barely tell a T-55 from a T-62 at arms length in 6mm, I'm the wrong man to ask

This is why I have to rely on different colour schemes and basing - which works excellently - pop a bit of static grass or clump foliage on each T-55 base on the left front, a spot on the right front for T-62 bases? Or do the T-55's in monotone green, whilst the T-62 get the "applied on the way out the depot when the balloon goes up" sand tone disruptive stripes as well.

Or pop a small dab of colour on back base edge to denote type?

I may use the alternative - don't mix units & use whichever minis I have...

Due to the level of play, you're not likely to field more than one type of tank in a force so identification is less of not much of an issue.

Nick