A friend has a couple of these tanks he uses with his jeep and wanted to understand more. We've learnt they are an internal water tank for an M3 Grant, I have drawn a blank in the armored pages of the forum so thought the Jerry can spot might be a place to try
Despite much googling I can't find any photos of them in situ. If anyone can help or has any other info that would be great. He's also keen to get a few views on what they're worth (so far we're thinking US$100-125)
Thanks in advance