This one hurts to sell but I have to get rid of some stuff, I’ve had Gibs here for only about 15 years and it’s awesome it sounds like everything you love from the late 60’s , theres no way to know exactly the date of manufacture on these amps because of the fire Gibson had years ago but based on what I could get from the pots and caps (a couple caps have been replaced) it was made in 1960, I am also an FFL and will entertain firearms related trades, feel free to text me any questions you have (nine two eight) 2005769