Numéros de série - Getzen Instruments
| Serial Number | Year Manufactured |
| SERIES "K" | |
| K101-K12100 | 1964-1967 |
| K12101-K31120 | 1968-1971 |
| K31121-K61216 | 1972-1975 |
| K61217-K81565 | 1976-1979 |
| K61218-K113438 | 1980-1985 |
| K113439-K117787 | 1986 |
| K117788-K124213 | 1987 |
| K124214-K127562 | 1988 |
| K127563-K131003 | 1989 |
| K131004-K136176 | 1990 |
| K136177-K137783 | 1991 |
| K137784-K138260 | 1992 |
| SERIES "SK" | |
| SK101-SK4350 | 1964-1967 |
| SK4351-SK13820 | 1968-1971 |
| SK13821-SK26835 | 1972-1975 |
| SK26836-SK36612 | 1976-1979 |
| SK36613-SK43412 | 1980-1985 |
| SK44482-SK45121 | 1986 |
| SK45122-SK46566 | 1987 |
| SK46567-SK48371 | 1988 |
| SK48372-SK50328 | 1989 |
| SK50329-SK52542 | 1990 |
| SK52543-SK53674 | 1991 |
| SK53675-SK54099 | 1992 |
| SERIES "A" | |
| A101-A3190 | 1964-1967 |
| A3191-A8115 | 1968-1971 |
| A8116-A19626 | 1972-1975 |
| A19627-A33453 | 1976-1979 |
| A33454-A45936 | 1980-1985 |
| A47586-A49686 | 1986 |
| A49686-A52777 | 1987 |
| A52778-A55603 | 1988 |
| A55604-A57841 | 1989 |
| A57842-A60425 | 1990 |
| A60426-A61781 | 1991 |
| A61782-A62070 | 1992 |
| SERIES "KB" | |
| KB101-KB550 | 1964-1967 |
| KB551-KB1309 | 1968-1971 |
| KB1310-KB1890 | 1972-1975 |
| KB1891-KB2465 | 1976-1979 |
| KB2466-KB2795 | 1980-1985 |
| KB2835-KB2862 | 1986 |
| KB2863-KB2982 | 1987 |
| KB2983-KB3052 | 1988 |
| SERIES "KT" | |
| KT101-KT4531 | 1964-1967 |
| KT4532-KT8506 | 1968-1971 |
| KT8507-KT12206 | 1972-1975 |
| KT12207-KT15895 | 1976-1979 |
| KT15896 | 1980-1985 |
| SERIES "F" | |
| F101-F13850 | 1964-1967 |
| F13851-F22698 | 1968-1971 |
| F22699-F25630 | 1972-1975 |
| F25631-F26272 | 1976-1979 |
| F26273-F26828 | 1980-1985 |
| F26828-F26828 | 1986 |
| SERIES "EC" | |
| EC101-EC410 | 1968-1971 |
| EC411-EC1565 | 1972-1975 |
| EC1566-EC3638 | 1976-1979 |
| EC3639-EC6306 | 1980-1985 |
| EC6826-EC7212 | 1986 |
| EC7213-EC7792 | 1987 |
| EC7793-EC8465 | 1988 |
| EC8466-EC9124 | 1989 |
| EC9125-EC9605 | 1990 |
| EC9606-EC9932 | 1991 |
| EC9933-EC10044 | 1992 |
| SERIES "SE" | |
| SE7624-SE7827 | 1968-1971 |
| SE7828-SE12036 | 1972-1975 |
| SE12037-SE14784 | 1976-1979 |
| SE14785 | 1980-1985 |
| SERIES "KN" | |
| KN101-KN440 | 1968-1971 |
| KN441-KN2173 | 1972-1975 |
| KN2174-KN3700 | 1976-1979 |
| KN3701-KN4330 | 1980-1985 |
| KN4440-KN4499 | 1986 |
| KN4500-KN4589 | 1987 |
| KN4590-KN4698 | 1988 |
| KN4699-KN4778 | 1989 |
| KN4779-KN4828 | 1990 |
| KN4829-KN4870 | 1991 |
| KN4871-KN4887 | 1992 |
| SERIES "KH" | |
| KH101-KH300 | 1968-1971 |
| KH301-KH1299 | 1972-1975 |
| KH1300-KH2485 | 1976-1979 |
| KH2486-KH3215 | 1980-1985 |
| KH3265-KH3314 | 1986 |
| KH3315-KH3454 | 1987 |
| KH3455-KH3527 | 1988 |
| KH3528-KH3587 | 1989 |
| KH3588-KH3618 | 1990 |
| KH3618-KH3629 | 1991 |
| KH3630-KH3653 | 1992 |
| SERIES "BP" | |
| BP101-BP146 | 1968-1971 |
| BP147-BP722 | 1972-1975 |
| BP723-BP1690 | 1976-1979 |
| BP1691-BP3053 | 1980-1985 |
| BP3332-BP3610 | 1986 |
| BP3611-BP3875 | 1987 |
| BP3876-BP4043 | 1988 |
| BP4044-BP4295 | 1989 |
| BP4296-BP4445 | 1990 |
| BP4446-BP4610 | 1991 |
| SERIES "M" | |
| M101-M2930 | 1972-1975 |
| M2931-M14400 | 1976-1979 |
| SERIES "TP" | |
| TP101-TP576 | 1976-1979 |
| TP577-TP888 | 1980-1985 |
| SERIES "RA" | |
| RA101-RA106 | 1980-1985 |
| RA424-RA924 | 1986 |
| RA925-RA1513 | 1987 |
| RA1514-RA2271 | 1988 |
| RA2272-RA2707 | 1989 |
| RA2708-RA3173 | 1990 |
| RA3174-RA4459 | 1991 |
| RA3459-RA3464 | 1992 |
| SERIES "CF" | |
| CF101-CF750 | 1980-1985 |
| CF980-CF1079 | 1986 |
| CF1080-CF1369 | 1987 |
| CF1370-CF1599 | 1988 |
| CF1600-CF1749 | 1989 |
| CF1750-CF1902 | 1990 |
| CF1903-CF1950 | 1991 |
| CF1951-CF1989 | 1992 |
| SERIES "MB" | |
| MB101-MB119 | |
| SERIES "KTR" | |
| KTR200-KTR303 | 1980-1985 |
| SERIES "P" | |
| P101-P314 | 1980-1985 |
| P344-P403 | 1986 |
| P404-P423 | 1987 |
| P424-P463 | 1988 |
| P464-P503 | 1989 |
| P504-P533 | 1990 |
| P534-P546 | 1991 |
| P547-P576 | 1992 |
| NEW SERIAL NUMBERS STARTED "P" & "R" | |
| P00100-P02064 | 1992 |
| R00100-R03428 | 1992 |