Serial number dates for IHC (McCormick-Deering) type LA/LB engines
LA 1½-2½ HP
LA101 -to- LA132...............................................1934
LA 3-5 HP
LA501 -to- LA980...............................................1935
LB 1½-2½ HP
LBA????? -to- LBA66393.....................................1941
LB 3-5 HP
LBB????? -to- LBB25273.....................................1941
LA133 -to- LA14654............................................1935
LA14655 -to- LA17852........................................1936
LAA17853 -to- LAA29504...................................1936
LAA29505 -to- LAA41946...................................1937
LAA41947 -to- LAA47997...................................1938
LAA47998 -to- LAA54262...................................1939
LAA54263 -to- LAA62613...................................1940
LAA62614 -to- LAA?????....................................1941
LA981 -to- LA1725.............................................1936
LBA66394 -to- LBA72943....................................1942
LBA72944 -to- LBA76060....................................1943
LBA76061 -to- LBA86647....................................1944
LBA86648 -to- LBA100998..................................1945
LBA100999 -to- LBA114787................................1946
LBA114788 -to- LBA130393................................1947
LBA130394 -to- LBA148518................................1948
LBB25274 -to- LBB30922....................................1942
LBB30923 -to- LBB33508....................................1943
LBB33509 -to- LBB40100....................................1944
LBB40101 -to- LBB48766....................................1945
LBB48767 -to- LBB56535....................................1946
LBB56536 -to- LBB63625....................................1947
LBB63626 -to- LBB72132....................................1948