I guess they called these 1 1/2 quarts (Imperial). They hold 1600ml.
Buy 1 for $5 or make an offer for all 7.
The mouth size is between modern regular and wide mouth (see last photo).
They still make sealer rings and they make modern snap lids and bands in this size.
(I've seen them at Cdn Tire.)
The second photo is with a flash.
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