[AT] Where's the Serial No. on the IHC W-4?

[Stephen Offiler]

On Tue, Sep 9, 2008 at 2:07 PM, Roy Morgan <k1lky at earthlink.net> wrote:

> I have a report from home on the serial number plate, but it's a
> mystery:
>
> The plate near the left brake/clutch pedal says:
>
> "12 13 T"
>
> What can this mean?


Roy, that's a casting code.  See:

http://ihregistry.com/ref/casting.html

12 13 T = Dec 13, 1950.

You say it's on a plate, and I'm sure it appears to be a plate, but in
fact it's cast right in.  The codes changed daily, of course, so they
had to be readily removable and changeable on the casting patterns.
Typically, you might find a plate of some sort which carried the
digits and was held to the pattern with screws.  These features become
part of the casting, right down to the screw heads.

Steve O.