HLV-H

Serial Numbers / Estimated date of manufacture

100 -- 1960 first sn for year

210 -- 1961 first sn for year

554 -- 1962 first sn for year

1042 -- 1963 first sn for year

1540 -- 1964 first sn for year

1905 --1965 first sn for year

2345 -- 1966 first sn for year

2452 --1968 uncertain if this is the 1st for the year

3662 -- 1969 uncertain if this is the 1st for the year

4160 -- 1970 uncertain if this is the 1st for the year

4791 -- 1971 uncertain if this is the 1st for the year

5510 L -- 1974 uncertain if this is the 1st for the year

6027 M -- 1976 uncertain if this is the 1st for the year

6397 N -- 1976 uncertain if this is the 1st for the year

6718 -- 1977 uncertain if this is the 1st for the year

6910 P -- 1977 uncertain if this is the 1st for the year

10369 T -- 1983 uncertain if this is the 1st for the year

10444 T -- 1983 uncertain if this is the 1st for the year

10778 T -- 1983 uncertain if this is the 1st for the year

10937 T -- 1983 uncertain if this is the 1st for the year

11044 T -- 1983 uncertain if this is the 1st for the year

11821 T -- 1984 uncertain if this is the 1st for the year

12319 T -- 1986 uncertain if this is the 1st for the year

12952 T -- 1988 uncertain if this is the 1st for the year

13244 T -- 1990 uncertain if this is the 1st for the year

13564 T -- 1990 uncertain if this is the 1st for the year

13830 T -- 1990 uncertain if this is the 1st for the year

14961 T -- 1994 uncertain if this is the 1st for the year

15361 T -- 1998 uncertain if this is the 1st for the year