Thought I'd post these and see who had what, mine is "PG", no serial numbers = June 1960
Actually, the key to manufacture date on your Remington Nylon 66 is not the serial number, but a stamping on the barrel. There will be two letters, the first being the month, and the second being the year. Here's a quick rundown.
The month codes are B=Jan L=Feb A=Mar C=Apr K=May P=Jun O=Jul W=Aug D=Sep E=Oct R=Nov X=Dec
As you will note, this forms the acronym BLACKPOWDERX, which is easy to remember.
The year codes are E-1958, F-1959, G-1960, H-1961, J-1962, K-1963, L-1964, M-1965, N-1966, P-1967, R-1968, S-1969, T-1970, U-1971, W-1972, X-1973, Y-1974, Z-1975, O-1977 ,Q-1978 ,V-1979 ,A-1980, B-1981, C-1982, D-1983, E-1984, F-1985, G-1986, H-1987, I-1988, J-1989, K-1990. Note that there are duplicates.
Early guns had no serial number.
Mid-production guns had no-prefix serial numbers.
Later production guns had A-prefix serial numbers.
Light or partial stampings can be confusing.
View carefully with a magnifier. The two letters are right in front of the rear sight along the barrel on the left side of the barrel.
Actually, the key to manufacture date on your Remington Nylon 66 is not the serial number, but a stamping on the barrel. There will be two letters, the first being the month, and the second being the year. Here's a quick rundown.
The month codes are B=Jan L=Feb A=Mar C=Apr K=May P=Jun O=Jul W=Aug D=Sep E=Oct R=Nov X=Dec
As you will note, this forms the acronym BLACKPOWDERX, which is easy to remember.
The year codes are E-1958, F-1959, G-1960, H-1961, J-1962, K-1963, L-1964, M-1965, N-1966, P-1967, R-1968, S-1969, T-1970, U-1971, W-1972, X-1973, Y-1974, Z-1975, O-1977 ,Q-1978 ,V-1979 ,A-1980, B-1981, C-1982, D-1983, E-1984, F-1985, G-1986, H-1987, I-1988, J-1989, K-1990. Note that there are duplicates.
Early guns had no serial number.
Mid-production guns had no-prefix serial numbers.
Later production guns had A-prefix serial numbers.
Light or partial stampings can be confusing.
View carefully with a magnifier. The two letters are right in front of the rear sight along the barrel on the left side of the barrel.

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