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Half Wave and Full Wave Rectifiers II

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.

U18 Osram large balloon shape mesh plate full cup getter audio rectifier U18/20 FW4/800

U18 large balloon audio rectifier by Osram £ 300

U18/20 Marconi Marconiphone flat jagged top black plate full getter holy grail FW4/800 CV31

Marconiphone U18/20 £ 500 pair.

Marconiphone U18/20 £ 900 quartet.

U18/20 Osram helix top mica black rugged plate full mesh getter Holy Grail audio valves

Osram U18/20 Helix top mica £ 550 pair.

Osram U18/20bHelix top mica £ 1,000 quartet.

U5 Marconi Osram pip top CV3743 FIRST ever made rectifier 1926 super rare

Marconi Osram U5 Pip top year 1926 £ 500

U5 Osram balloon CV3743 FIRST ever made rectifiers pair 1929 super rare

Osram U5 matched £ 800 pair.

U50 directly heated rectifiers Mullard Marconi Osram 5Y3G CV1268 black plate square getter

U50 Marconi GEC Osram Brown base with square getter £ 180 quartet

U50 Osram 5Y3G black plate full cup getter early type Mullard Osram Marconi Philips BVA quartet

U50 black base full cup getter £ 160 quartet

U8 Osram balloon directly heated rectifier nickel plate V shaped oxide filament Holy Grail

U8 Osram balloon very rare £ 450