Early 1975 model. The transfromers are from mid to late 1974 and the speaker is from the 5th week of 1975. The current owner of this was informed that this is the original speaker and it is the correct speaker for this amp. The transformers are a few months older. The amp works perfect and sounds great. I would have to say that about any Deluxe Reverb ,this model never lets us down and the size of the amp is also very handy. This is the version that pre dates the push pull feature fender added to this model later.