Not an expert but have played it for awhile. Minor cosmetic damage to side faux wood panel (shown in pitcher) guessing it was made in 1975. Hard to read serial number. Model 2090. Sounds awesome but I just don’t have the time anymore to play. All functions work to my knowledge. Pitch strip and mod wheel both work and are fun to mess with. If you would like a video of any specific function please message me. All questions I will do my best to answer.