These just came in and the owner planned to use them but never did. They come with curve tracer test data. 2 RCA USA 6L6GC black plate date codes both AR/AR, July 1965 -USED Tested- Tubes MATCHED 73/74- In White Boxes. We tested them in our Mercury 1100C and they are a close match. They produce very strong smooth bass and pronounced highs in our MC30, perfect tubes. They each have one SIDE HALO getter. Construction is identical. The markings are clean and readable, 6L6GC, USA, AR and AR.
These have been carefully boxed in bubble wrap. FREE SHIPPING: Shipping is USPS Medium Flat Rate Priority Box Insured for full value.