U18 Osram Fat shape full getter large anode U18/20 early type
Osram U18 ST fat shape £ 550 pair.
Osram U18 ST fat shape £ 1,000 quartet.
Description
An amazing set of four Osram U18 early type ST fat shape circa 1938, full getter and very large anode located on each side of each valve.
Make no mistakes, these are by far the rarest U18 (then later named) U18/20 ever made.
Beautiful construction for these directly heated full wave rectifiers.
All four Osram U18 have been tested 100% emission and in perfect working order.
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