A couple significantly off weight wheats

From what I can find they're struck on foreign planchets I'm comparing those weights to other weights of currency from other countries as well as our own and from what I can see it can also be an alloy mixture issue what are your opinions
1
Comments
You said:
From what I can find they're struck on foreign planchets
Which foreign planchets matches the Diameter, weight, and composition?
More than likely, it's struck on slightly thin planchet. The weight spec for a copper cent is 3.11 gms +/- 0.13 so your coin is slightly underweight.
What led you to weigh them in the first place?
And as far as the other coin oldhoopster or is that one in the clear as well
And jbk iam currently avidly everyday reaserching and studying mint errors I have 4lbs of wheat cents and I weighed each one yesterday.
I have 4 that weigh-in off . 1941 D 2.56 grams 1944D 2.73grams, 1946P 3.27grams( which are listed above) and a 1957P 3.32 grams
And I have a 1962 Canadian penny that weighs in exactly the same as the 1946 that weighs 3.27
It is not at all unusual to find slightly under or overweight coins. The most common reason is slightly thick or thin planchet stock. You can research if any foreign coins were struck at the mints those years and find the specs on them.
I greatly appreciate you taking the time to tell me that and since you mention it I have a 1957 p Lincoln wheat cent that weighs 3.32 g and around that time period our mint actually produced Netherlands coins that weighed 3.32 g
LOL... A bunch of dudes going to the bank and getting boxes of coins... Sitting in the living room weighing coins... Telling their wife/gf/partner... No, I don't need to go to work I am going to find coins that are improper weights and then sell them...
This is a fascinating realm...
The US Mint did not strike coins for the Netherlands around 1957, nor did theY ever use copper planchets that weighed 3.32 gms
The US only struck coins for Netherlands in 1944-45 and the Neth. East Indies from 1941-1946. There were a few copper planchets used for NEI and all but one are too large to fit into the striking chamber of a cent. There is one smaller planchet but it was 2.3 gms.