September 1942 seems to have been the date that red and white was first noted in ACIs.
Unfortunately, I don't known what was behind the sticker.
Dave H. Post-war cans were generally dated - I've never seen the blue but many were made with specific oil company branding. I have a red Esso 1/2 pint Wesco. It's difficult to tell what has been swapped around in the intervening years, but any mechanism with all metal parts is probably OK. The can in the training film looks to have the rolled steel top.