Frankenheimer wrote:
Sorry for my late reply. It is a 18x20 FloorTom which was very common in the 70s. Mine is from 1971. It's a Ludwig custom club date floor tom consisting of a 3 ply mahagony shell. The Diplomat was hard to get, but there's the low end boom which i like so much. Finally the sound came back.

P.s: I am a left hander but playing right handed and openhanded. So i use the 20'' on the left side beside the snare. It's a large kit, but who says, that i use the whole kit on gigs ? The sound is excellent you must have "arms" to get a sound of it. Using the right tension (using Gadds Tension mechanism) you will get a monsterous boom out of it. I think Bonzo used a 18'' and a 20'' sometimes.