Mark V combo differences

[lhrocker]

I have a Mark V that has a sn between 125 and 140. When I look at the back, there is a bar (like on rectos) to protect the tubes. On some new MV's, there is a tube cage. Was the cage a more recent addition? The amp was made in the last quarter or 2009.

 

[eudaimonia02912]

Older models had bars; newer models have cages.