I'm betting the Pfeiffer can was the yellow one, those are common & seem to hold up extremely well in outdoor dumps. the older 1930's Hamms are about the only valuable & desirable ones. post more
These are a few I've found recently. The honeycomb jar is cool can't read the bottom or photograph well. The Golden Guernsey from Paw Paw. The Lockshore Farms in Kalamazoo. The Gold Medal Dairy in Lawton. And a pint from Roelof Dairy in Galesburg.