1944-S Improper Planchet Composition?

Another possibility to try to eliminate: Unfortunately you can buy, and have been able to for a long time now, fake 1944 steel cents online from China. They are pitted like this b/c they are cast fakes. I own one I bought when studying fakes modern coins years ago.

These are typified also by the rim appearing like the rim showing in the REV pictures of yours that you posted. Although the info in the following link is about a 1932 fake quarter I bought at the same time, look at the pics of the rim to see the imperfections (worse on the quarter) and similarities of area to that of your coin's rim.
http://goccf.com/t/136142

Sorry I do not have it at hand to weigh or see if it sticks to a magnet. Just saying they exist, and I have seen people find them roll hunting who have posted them online.

the WWII period saw variances in cent composition as the mint sometimes incorportated spent shell casings, so your coin might have more tin than most, and it might have been bleached by environmental exposure or an old cleaning, here we see such coins far more often than an improper planchet

I'm not sure why the various color heat test for steel, since it is not magnetic, wouldn't that damage the coin and value?
A XRF test should be more conclusive in this case.

I will not go more. Who told you the XRF is not accurate was wrong. you has XRF for 80-100 $ for just limited elements and others for accuracy at 2000$ till 20K.

The point for me with you here it is:
If you know the answers and you have all the knowledge about this coin, metallurgy, foreign coins struck by the US Mint and metallic test, WHY YOU COME HERE?

Anyone here answers with theirs opinion's and theirs's expertise and all together mean more then a millennium of coins knowledge. So reflect at your place in the coins community.

Not sure why the comparison to the 25 Centstukken. Creates confusion. My references indicate Philly mint struck 40,000,000 25 Centstukken in 1944 for the Netherlands. Not the San Francisco mint.

San Francisco mint did produce some 64,040,000 10 Centstukken in 1944 for the Netherlands.

Wondering if you could provide a better detailed obverse and reverse image of your coin only? One that shows the details and color on its own.

At this point taking in account the wear, I'm wondering if it's been rub with mercury at some point. Thanks, Doug.

Thanks, silviosi, lI'm thinking one or the other made a typo.

You posted a PDF a month or two ago showing different figures for the Netherlands. Thanks, Doug.

Silviosi, PM sent a few days ago. Thanks, Doug.

I CC myself and found it in my Spam folder. Thanks again, Doug.