I've got maybe 10 or 15 6005 / 6AQ5 beam pentode power tubes. I tested one of the 15 tubes and it measured OK, but some of them look like they might be a bit tired. You can get about 10W out of a push-pull pair. I have no sleeves, so I'll have to wrap them in paper towels or something. Bit of a hassle. $25 +shipping takes the lot. Local pickup is possible. Ships from 94591.