41MH Cossor ST fat shape blue ribbon – Mullard 354V ST fat shape MH4 AC/HL

Description

We offer a new variation of these two precious gems, the Cossor 41MH made in the early 1930s in limited quantity and the Mullard 354V we have already covered on this site.

Both Cossor 41MH have mesh plate, full emission and working order.

The Mullard 354V are New Old Stock mint and tested excellent at 100% both.