I.H. H tractor

On the h tractor how can you find the year if no tag?

There is a serial number stamped into the
side of the block. It's stamped into a flat
space I believe (if I remember right) on
the right side of the block. A space that
looks like it was machined off for the
purpose of stamping the number. Not raised
lettering as were the casting codes.

That second serial number on the block
often times and likely matched the serial
number that was on the serial number plate.
As if they stamped the same serial number
in another location. The only times these
serial numbers don't match is if the
tractor has had a replacement block or
engine, and once in awhile the production
line got out of sink at the factory. If the
later is the case, the un-matching serial
number wasn't off by far and would still
indicate the same year as the serial number
plate would have.

Replacement blocks I believe either had a
blank space (no number stamped) or a number
that would be way way off (not even
indicating the same year).

Casting codes had a letter system with a
letter to indicate year produced. Not sure
how true this system ran. Extra parts were
likely used after the end of the year until
gone. Not sure myself what letter indicated
which year. More than one letter would have
to be found and varified when using this
system. As in finding the same casting
letter on the gist of the tractor. Not just
using one letter that you found.

There were a few changes made to the H
during its years of production. For
example, the Deereing name was dropped from
its hood decal somewhere around mid
production. There were alot of such changes
along the way, but I won't get into those.
You'd have to be really familiar with the H
to go by that as far as determining the
year based upon that.