Unusual Collectable JUMBO vintage tube from early Holland! Over 14.50 inches long with diameter over 3.80. Very HEAVY Transmitting Triode beyond Rare.Type PR4B is Normally replaceable - slightly different. One of the largest electube we collected. This can not replace the 212 308 western electric.
This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Capacitors". The seller is "2a3" and is located in this country: US. This item can be shipped worldwide.