Hello Etienne
Sand the outside windshield down on each side as well as under the doorway.
You might find markings there if it was used by the Canadians.
If you provide me your serial number I can look on my list.
We bought used GPW's from the US during the war. So even if you found US markings, it would not rule out use by the CDN's.
Looks like blue paint underneath?
Eric
cmpmagazine@hotmail.com