A 1975 proof dime weighs exactly 2.27 grams.
Key Specifications of the 1975 Proof Dime
The 1975 Roosevelt dime, including proof issues, adheres to standard specifications for the series during that period. These dimes were meticulously struck to showcase exceptional detail and finish, often produced at the San Francisco Mint, though some rare varieties exist without a mint mark.
Here's a quick overview of its specifications:
| Feature | Detail |
|---|---|
| Weight | 2.27 grams |
| Country | United States |
| Year | 1975 |
| Designer | John R. Sinnock |
| Mint Location | San Francisco (for proof issues) |
| PCGS Industry # | 5254 (for No S variety) |
Composition of the 1975 Dime
The 1975 proof dime, like its circulating counterparts from that era, is composed of a copper-nickel clad material. This composition was introduced in 1965, replacing the previous silver coinage, to manage rising silver prices.
The specific composition consists of:
- Outer Layers: 75% copper and 25% nickel.
- Inner Core: Pure copper.
These layers are bonded together, giving the coin a distinct appearance and durability. The clad composition ensures that the coin maintains its metallic integrity while offering an economical alternative to precious metals.
Understanding Proof Coins
Proof coins, such as the 1975 proof dime, are specially struck coins characterized by their:
- Sharp details: The dies used to strike proof coins are polished and handled with extreme care to ensure every detail of the design is crisp.
- Mirror-like fields: The flat surfaces of the coin often have a highly reflective, mirror-like finish.
- Frosted devices: The raised design elements (devices) typically have a frosted or satiny appearance, creating a beautiful contrast with the fields.
- Multiple strikes: Proof coins are struck multiple times, often with higher tonnage, to ensure a full and complete impression.
The production of proof coins like the 1975 dime reflects a high standard of minting craftsmanship, appealing to collectors who value aesthetic quality and historical significance.
