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Product 24/57 GEC NO_C USD$505.11/per piece Stock : 1 pcs. Status : NOS Box : OB Descriptions :GEC 53KU =U54 =CV378 ~GZ34/5AR4 ,gray anode, brown base,Cossor made! (2025) the ones in the photos sold out. now in stock : 2 pcs in stock, with MWT logo and MWT U54 original box. GEC CV378 =53KU, for 5U4G, GZ34/5AR4; Made by Cossor in UK in 1950s , with GEC sticker. The "gray plates and brown base" version ! Very rare and the best! NOS in original military box, perfect conditon! Please look at the photos. Very rare tubes, please email us first to check if the item is in stock before you pay.

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