This is a batch of three identical, military grade Raytheon JRP-5687WA tubes with black plates, D-getters and copper rods. All three are New In Box and have the same batch codes (3223 344C) and date codes (6-34 = 34th week of 1956). These are well-liked and there are positive comments about them here in the Tubes forum. Price is for all three.All tubes have been tested on my Western Electric (made by Hickok) KS-15560 L1 tube tester. Minimum transconductance for a good 5687 tube on this tester is 5100 umhos and a new tube typically tests between 7500 and 8000 umhos. Transconductance values are written on side of tubes (away from screen printing) with removable Sharpie pen. Transconductance values are: 7800/7600, 8000/8200, 8100/8200. Pay Pal adds 3% for domestic and 4.5% for overseas buyers.
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| Payment and Shipping |
| Pay By: |
Personal Check after it clears, Paypal |
| Ship Weight: |
0.5 lbs. |
| Ships To: |
WorldWide |
| Shippers/Payer: |
Postal / Paid by: Buyer |
| Shipping Notes: |
USPS First Class shipping has no tracking and international buyers must accept this risk or designate Priority Mail shipping (has tracking).
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