RCA Command 5751 blackplate-$22 shipped
This tube was purchased from another headfier and used once. It should provide the same test results when I purchased it. This is an excellent sounding tube with a warm liwuidy mid-range.
The lettering is poor, but the quality is good, and they are closely matched per triode! I can verify that these sound great in the mg head. The minimum reading for good is 28, these test as follows:
Raytheon 5751 blackplate windmill getter-$10 shipped
This is supposedly on its way out. It tested at 70% from the tube dealer I purchased it from. Another headfier purchased it and notified me it tested bad. There is a very low audible hum in one channel that seems to almost go away over time. It still provides the great raytheon sound but doesnt have much life left. Heres your chance to try out the raytheon windmill cheap before throwing down $50 for a used one on ebay.