Catalog
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| Issuer | Italy |
|---|---|
| Year | 1939-1940 |
| Type | Log in to see details |
| Value | Log in to see details |
| Currency | Log in to see details |
| Composition | Log in to see details |
| Weight | Log in to see details |
| Diameter | Log in to see details |
| Thickness | 1.65 mm |
| Shape | Log in to see details |
| Technique | Log in to see details |
| Orientation | Log in to see details |
| Engraver(s) | Log in to see details |
| In circulation to | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Log in to see details |
| Obverse lettering | Log in to see details |
| Reverse description | Log in to see details |
| Reverse script | Latin |
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| Edge | Log in to see details |
| Mint | Log in to see details |
| Mintage | 1939 R - XVII; Shares mintage with 1939 XVII KM# 75b - 10,463,000 1939 R - XVIII; Shares mintage with 1939 XVIII KM# 75b - 25,300,000 1940 R - XVIII; Shares mintage with 1940 XVIII KM# 75b - 35,350,000 |
| Additional information |
Italy's shift to Acmonital — a nickel-chromium-manganese steel alloy developed domestically — was driven by autarky policy under Mussolini, who sought to eliminate dependence on imported nickel following League of Nations sanctions after the invasion of Ethiopia in 1935. The austenitic variant of this coin is non-magnetic, distinguishing it from the ferritic Acmonital issues struck concurrently, which respond to a magnet. The two types circulated together with no practical distinction for users.
The 1939–1940 window for this specific composition is narrow, partly because wartime material priorities soon disrupted alloy consistency across the Italian mints.