Are you positive your bottle is 1945. Im no expert but according to most articles U7P bottles were phased out by 1940.
I know there are exceptions to the rules, as I own a 1943 amber squat 8 bubble bottle that should have been phased out by 1940 as well.
Yea I'm quite sure...I have other bottle logos that ran latter in Canada than in the USA. Dominion Glass goes back to 1886....the 1928 year you mention is referring to when Dominion started using the diamond D logo.
My bottle is marked C <D> 5 May/June 1945.................. so far my findings indicate that the 1930's bottles are marked with only the diamond D logo and a # to the right. I only have two bottles marked in this fashion so I really need more bottles to sample to form a positive conclusion.
This is from a article by Bill Lockhart, Beau Schriever, and Bill Lindsey
~In all three decades, the logo was in the center of the base, with the pair number above it and the mold number below it. The year was indicated by a single-digit number to the right of the logo. During the 1940s, the month was shown by a letter: (King 1987:247; Miller & Jorgensen 1986:3).
A = January/February
B = March/April
C = May/June
D = July/August
E = September/October
F = November/December
Yes I have a few items.... ...still working on variations and still need a Canadian 8 bubble. The bottle with Ca Ravigote are from eastern Canada....we never had those out west.
Can't seem to find a photo of my cans............