Vilket år gjordes wurlitzer SPINETT piano nummer 720300?

Det gjordes mellan 1961 och 1962. Detta diagram kan du hjälpa: WURLITZERhttp://www.bluebookofpianos.com/serial1.htm#WURLITZER
After 1937:1937-150000 1952-444000 1969-106500 1981-16450001938-175000 1953-474451 1970-1105000 1982-17000001939-180000 1955-537000 1971-1145000 1983-17250001940-195000 1960-657000 1972-1175000 1984-17750001941-210000 1961-715000 1973-1205000 1985-18250001942-225000 1962-760000 1974-1235000 1986-18500001946-330000 1963-815000 1975-1266000 1987-19000001947-333000 1964-860000 1976-1296000 1988-20200001948-340000 1965-905000 1977-1385000 1989-20550001949-370000 1966-945000 1978-1495000 1990-20800001950-400000 1967-985000 1979-1550000 1991-21150001951-419000 1968-1025000 1980-1595000 1992-2145000