Differentiating between 2 Italian 20 Centesimi coins (1940 and 1941) [gelöst]

I have two Italian 20 Centesimi coins - one from 1940 and one from 1941.  They look identical.

For reference, I am talking about N#1959 (magnetic version) and N#11202 (non-magnetic)

My 1941 coin is DEFINITELY N#1959 as my rare earth magnet wouldn't let it go. But the 1940 coin is slightly magnetic.  On edge, my rare earth won't hold it and it feels non-magnetic, but when I pick it up on the face, the magnet holds it, but I can remove it from the magnet with no problem.  

So, my question is, is it possible there are “degrees” of “non-magnetic” with these acmonital coins?  Could my 1940 be N#11202 (non-magnetic)?  Which would you call it? I don't have a scale accurate enough to tell the 0.03g difference between them.

Thank you in advance!

Hello 🤖

Without pictures, it will be very difficult for anyone to help you. Could you please post clear pictures of each side of your item?

Please note that this is an automatic message. Feel free to ignore if it is not relevant.

It's an hard-edged question. So I asked Chatgpt, whose answers are not always sure …

Acmonital coins are there non magnetic or slightly magnetics ?

Answer: Acmonital is a brand name for a type of stainless steel that is known for its high resistance to corrosion and its use in various industrial applications, including coinage. The term "Acmonital" specifically refers to a steel alloy containing a mixture of iron, chromium, and nickel. Acmonital coins are generally non-magnetic or only slightly magnetic. The primary reason is that the alloy used in Acmonital is designed to have low magnetic properties due to the inclusion of chromium and nickel, which reduce the material's magnetic response. This makes Acmonital coins less likely to be attracted by magnets compared to pure iron or more ferromagnetic alloys.

However, depending on the exact composition of the alloy and its treatment during manufacture, some Acmonital coins might exhibit slight magnetic attraction, but they would not be strongly magnetic like coins made from ferromagnetic materials like iron or steel with high concentrations of iron.

So, in general, Acmonital coins are considered non-magnetic or slightly magnetic.

This was just answered a couple of weeks ago.  Chatgpt nailed it.

Italian 20 centesimi 1939 [solved] – Numista