[Milsurplus] Markings on WWII Navy Receiver

[J. Forster]

If it's grease pencil and you want to remove it, try rubber cement thinner
(Heptane). It will likely not touch the paint, but dissolves grease easily.
-John

David Stinson wrote:

> I recently acquired a WWII U.S. Navy DAG-1 portable direction
> finder receiver.  It has been marked with a black grease pencil.
> On the front cover is "ICP / SUR / 13-64."
> Before that was written, someone marked it "DAG" with
> a white grease pencil.
> On the sides is written "ICP"
> On the back is written "SUR ICP 13-64."
>
> Does anyone know the significance of these?
> I'm trying to decide if they should be preserved
> or covered with a repaint.
>
> Thanks,
> Dave S.