Henderson 4 engine serial numbers

[MMasa]

I need help determining the year of a henderson engine I have. The numbers on the boss are 23277 (note that the first 2 is smaller than the rest of the numbers so it could be 3277) I also need sources for parts and services for engine rebuilding and repair.
Thanks
Mark

[AdminGuy]

Henderson engine numbers

Mark,

I don't know if you already has this worked out, but here goes:

Henderson Models:

Detroit Built Model A 1912
Detroit Built Model B 1913
Detroit Built Model C 1914
Detroit Built Model D & E 1915 #3372
Detroit Built Model F 1916 #5243
Detroit Built Model G 1917 #6500
Detroit Built Model H 1918 #H or Z
Detroit Built Model 1919 #2 H or 2 Z
Chicago Built Model K 1920 #K 1200 - 1899
Chicago Built Model K 1921 #K 1900 - up
Chicago Built Deluxe 1922 #D 1000 - 2999
Chicago Built Deluxe 1923 #D 3000 - 4999
Chicago Built Deluxe 1924 #D 5000 - 12999
Chicago Built Deluxe 1925 #D 13000 - 19999
Chicago Built Deluxe 1926 #D 20000 - 22999
Chicago Built Deluxe 1927 #D 23000 - 24999
Chicago Built Deluxe 1928 #D 25000 - 27999
Chicago Built Steamline 1929 #KJ or KL 28000 - 32999
Chicago Built Steamline 1930 #KJ or KL 33000 - 34999
Chicago Built Steamline 1931 #KJ or KL 35000 and up