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| Hayman Serial Numbers 1970-1973 |
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The original Hayman production records for all models produced from October 1970 to June 1973. Serial numbers covered are five digit numbers begining with "40" (40nnn) and later four digit numbers begning with "5" (5nnn). From July 1973 to the end of production (into 1975) Hayman used a third serial number system, where the year of production is given by the last two digits of a six or seven digit number (e.g. nnnnn74). |