Plate numbers usually follow the pattern of the first 2. bypass, the Maxon OD9 is the obvious choice and will work out cheaper too with our 808 They have a little bit more grit which on this pedal. An Ibanez serial number can tell you two things, year of manufacture and factory of manufacture. before clipping on the ST-9 and after the clipping stage in the STL. Ibanez tube screamer serial number lookup