Ted Wotjaik is a custom builder from USA. This is an early full suspension frame from around 1995 probably. It has a rear end made by Battle (who also made complete frames). IIRC correctly, this frame in an earlier version had an AMP B3 rear end but the AMP rear end was always considered very flexy and had an unsophisticated rear shock. I guess the frame above was a huge step up from the flexy AMP B3 rear end.