NOS Western Electric 300B, Black Plate, 1964 & 1966, Matched Pair
We have discovered a perfect matching pair of 1964 & 1966, black plate, Double "D" getter, Western Electric 300B. In the nearly pristine original dark blue and white boxes with original cellulose packing, these tubes are absolutely beautiful. When we say matched pair, we mean it. These are within 0.5% of each other. You can't get any tighter than that. The getter flashings on both of these tubes are very large, feathered with no burn marks which means these are TRUE NOS tubes. These tubes have tight bases, no rattles and are guaranteed to please.
PLEASE NOTE: Price is for the pair of tubes. Payment by bank wire only. Please do not check out and pay by credit card or PayPal. Contact us for wire instructions. Also, we cannot apply discounts to this product.
Below is the pair together with their original boxes. Please note the date codes on the boxes (6413 and 11-66 = Quarter 1 of 1964 and November of 1966) match the date codes on the bases of the tubes (6413 and 6652 = Quarter 1 of 1964 and Quarter 4 of 1966).
This is the back of the actual tubes you will receive. 
This is a close up of the Double D Getter. 
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