Disclaimer: With a few exceptions, serialization at Peavey during the 70's and 80's was apparently accomplished through shared blocks of numbers. Because of this, there are no accurate dating charts available today (including this one). The serial numbers and dates listed below should be relatively accurate, however there is no guarantee of correctness.
If your serial number is Your T-60 was likely manufactured in
8Mxxxxxx 1978 0000xxxx - 0030xxxx 1978 0031xxxx - 0047xxxx 1979 0048xxxx - 0065xxxx 1980 0066xxxx - 0099xxxx 1981 0100xxxx - 0129xxxx 1982 0130xxxx - 0169xxxx 1983 0170xxxx - 0199xxxx 1984 0200xxxx - 0239xxxx 1985 0240xxxx - 0259xxxx 1986 0260xxxx - 0339xxxx 1987