BRIDGEPORT MILLING MACHINE “J” HEAD SERIAL NUMBERS
The serial number is on the knee of the machine It can be obscured by the chip shield.
| Date | Start S/N | End S/N | |
| 1938 | BH-1 | THRU | BH-39 Round ram |
| 1939 | BH-40 | THRU | BH-252 |
| 1940 | BH-253 | THRU | BH-656 |
| 1941 | BH-657 | THRU | BH-1549 |
| 1942 | BH-560 | THRU | BH-2943 |
| 1943 | BH-944 | THRU | BH-4105 |
| 1944 | BH-4106 | THRU | BH-4997 |
| 1945 | BH-4998 | THRU | BH-5930 |
| 1946 | BH-5931 | THRU | BH-5931 |
| 1947 | BH-7236 | THRU | BH-8814 |
| 1948 | BH-8815 | THRU | BH-10381 |
| 1949 | BH-10382 | THRU | BH-11378 |
| 1950 | BH-11379 | THRU | BH-11379 |
| 1951 | BH-12751 | THRU | BH-14489 |
| 1952 | BH-14490 | THRU | BH-16700 |
| 1953 | BH-16701 | THRU | BH-19367 |
| 1954 | BH-19368 | THRU | BH-22732 |
| 1955 | BH-22733 | THRU | BH-26962 |
| 1956 | BR-26963 | THRU | BR-31618 Start of V ram |
| 1957 | BR-31619 | THRU | BR-37278 |
| 1958 | BR-37279 | THRU | BR-42110 |
| 1959 | BR-42111 | THRU | BR-46938 |
| 1960 | BR-46939 | THRU | BR-52598 |
| 1961 | BR-52599 | THRU | BR-58552 |
| 1962 | BR-58553 | THRU | BR-64987 |
| 1963 | BR-64988 | THRU | BR-71981 |
| 1964 | BR-71982 | THRU | BR-79538 |
| 1965 | BR-75939 | THRU | BR-88180 |
| 1966 | BR-88181 | THRU | BR-98089 |
| 1967 | BR-98090 | THRU | BR-108351 |
| 1968 | BR-108352 | THRU | BR-118640 |
| 1969 | BR-118641 | THRU | BR-131778 |
| 1970 | BR-131779 | THRU | BR-138139 |
| 1971 | BR-138640 | THRU | BR-143350 |
| 1972 | BR-143351 | THRU | BR-149294 |
| 1973 | BR-149295 | THRU | BR-157909 |
| 1974 | BR-157910 | THRU | BR-167652 |
| 1975 | BR-167653 | THRU | BR-174083 |
| 1976 | BR-174084 | THRU | BR-180697 |
| 1977 | BR-180698 | THRU | BR-188559 |
| 1978 | BR-188560 | THRU | BR-196987 |
| 1979 | BR-196988 | THRU | BR-206296 |
| 1980 | BR-206297 | THRU | BR-216473 |
| 1981 | BR-216474 | THRU | BR-227523 |
| 1982 | BR-227524 | THRU | BR-231700 |
| 1983 | BR-231701 | THRU | BR-235985 |
| 1984 | BR-235986 | THRU | BR-241350 |
| 1985 | BR-241351 | THRU | BR-245659 |
| 1986 | BR-246660 | THRU | BR-248551 |
| 1987 | BR-248552 | THRU | BR-250531 |
| 1988 | BR-250532 | THRU | BR-252874 |
| 1989 | BR-252875 | THRU | BR-255463 |
| 1990 | BR-255464 | THRU | BR-257888 |
| 1991 | BR-257889 | THRU | BR-259897 |
| 1992 | BR-257898 | THRU | BR-262188 |
| 1993 | BR-262189 | THRU | BP-264586 |
| 1994 | BR-264587 | THRU | BR-267635 |
| 1995 | BR-264587 | THRU |
