Hobo's en Engelse Hoorn
| Serial Number |
Year Manufactured |
| 1 |
1937 |
| 2 - 7 |
1938 |
| 8 - 9 |
1939 |
| 10 |
1941 |
| 11, 12 |
1944 |
| 13 |
1945 |
| 14 |
1946 |
| 16, 17 |
1947 |
| 15, 18, 19 |
1948 |
| 20, 21 |
1949 |
| 22, 24, 25-30 |
1950 |
| 32 - 40, 46 |
1951 |
| 23, 31, 41 - 45, 47,50, 51, 54 - 57 |
1952 |
| 25, 48, 52, 58 - 65, 70 |
1953 |
| 49, 66 - 69, 71 - 73, 75 |
1954 |
| 53, 76 - 82 |
1955 |
| 74, 83 - 94 |
1956 |
| 78, 95 - 118 |
1957 |
| 119 - 142(?) |
1958 |
| 143(?) - 171, 188, 194 |
1959 |
| 172-187, 189-193,195-199,201-211, 220, 228, 232, 243 |
1960 |
| 200, 212-219, 221-227,229-231 |
1961 |
| 233-242, 244-264, 266-301, 303-306, 265, 302, 307-361 |
1962 |
| 362 - 413 |
1963 |
| 414 - 488(?) |
1964 |
| 489 - 509(?) |
1965 |
| 91(?) - 688 |
1966 |
| 689 - 779 |
1967 |
| 780 - 886 |
1968 |
| 887 - 997 |
1969 |
| 998 - 1077 |
1970 |
| 1078 - 1149 |
1971 |
| 1150 - 1214 |
1972 |
| 1215 - 1277 |
1973 |
| 1278 - 1344 |
1974 |
| 1345 - 1407 |
1975 |
| 1408 - 1457 |
1976 |
| 1458 - 1492 |
1977 |
| 1493 - 1522 |
1978 |
| 523 - 1557 |
1979 |
| 1558 - 1600 |
1980 |
| 1601 - 1633 |
1981 |
| 1634 - 1678 |
1982 |
| 1694 - 1714 |
1983 |
| 1715 - 1750 |
1984 |
| 1751 - 1788 |
1985 |
| 1789 - 1826 |
1986 |
| 1827 - 1867 |
1987 |
| 1868 - 1907 |
1988 |
| 1908 - 1945 |
1989 |
| 1946 - 1980 |
1990 |
| 1981 - 2017 |
1991 |
| 2018 - 2056 |
1992 |
| 2057 - 2091 |
1993 |
| 2092 - 2124 |
1994 |
| 2125 - 21xx |
1995 |
Laubin 'C' Series Instruments
The C series signify's instruments that were made at the Laubin home as opposed to the Peekskill location. Meridith Laubin reports that less than 20% are English Horns.
| Serial Number |
Year Manufactured |
| C1 - 3 |
1958 |
| C4, C6 |
1959 |
| C5, C7 - C12, C14, C15 |
1960 |
| C16 - C18 |
1961 |
| C19 - C21, AL26 |
1962 |
| C22, C23, AL30 |
1963 |
| C24, C27, C28 |
1964 |
| C25, AL31 |
1965 |
| C32, C33, C35 - C37 |
1966 |
| C38 - C41 |
1967 |
| C42 - C48 |
1968 |
