Japan Flag Japan • JPY (¥) • 2001 • Y# 125

Japan 500 Yen (2001) Specifications

Verify official mint weight in grams, millimeter dimensions, obverse and reverse engravings, and roll weights for the Japan 500 Yen (2001) coin.

Numismatic Examination

Obverse, Reverse & Technical Registry

Coin ID #167 • Y# 125
Japan Flag
Visual Reference

Coin Imagery & Details

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Obverse Design & Legend

Flowering Paulownia plant (Paulownia tomentosa) in the center flanked by raised horizontal security ribs containing the state title '日本国' (State of Japan) above and the denomination '五百円' (500 Yen) below, bordered by a beaded circle.

Reverse Design & Denomination

Large numeral '500' in the center featuring a vertical latent security image reading '500円' inside the two zeros when tilted, flanked by bamboo leaves at the top and Tachibana mandarin orange branches at the sides, with the regnal date '平成十三年' (Year 13 of Heisei / 2001) below.

Edge Inscription & Profile

Diagonal (helical) slanted reeding along the entire circumference as an anti-counterfeiting measure.

Numismatic Notes & Remarks

Struck in an alloy of 72% copper, 20% zinc, and 8% nickel. Introduced in 2000 (Heisei 12) to replace the older cupronickel 500 Yen coin due to widespread vending machine counterfeiting. Features micro-lettering spelling 'NIPPON' and latent security imagery inside the zeros. In 2001 (Heisei 13), an additional 238,000 collector Proof coins were struck.

Country: Japan → Currency: Japanese Yen (¥ / JPY) Denomination: 500 Yen Year: 2001 Shape: Round Gold Coins Hub →
Estimate Grade (1–70)
Physical & Metallurgical Data

Official Mint Specifications

Issuing Country Japan →
Face Value / Denomination 500 Yen
Official Currency Japanese Yen (¥ • JPY)
Minting Year 2001
Krause Catalog (KM#) Y# 125
Weight (Grams / Troy oz)
7.00 g (0.2251 oz t) Test Mass
Diameter
26.50 mm Fit Capsule
Thickness 1.81 mm
Planchet Shape Round
Edge Type Slanted reeding
Material / Composition Copper, Nickel, Nickel-Brass, Zinc
Surface Color / Tone Pale Gold
Engraver / Designer Japan Mint Officials
Recorded National Mints Japan Mint (Osaka)
Total Pieces Minted
607,803,000 Grade ROI
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Specification & Authentication Reference

Japan 500 Yen (2001) Coin FAQ

The official Japan 500 Yen (2001) coin from Japan (Krause catalog reference Y# 125) has a standard mint weight of 7.00 grams (0.2251 troy oz) and a diameter of 26.50 mm with an edge thickness of 1.81 mm.

Verify 7.00 g Tolerance

Based on a single planchet mass of 7.00 g, a 25-coin bank roll of Japan 500 Yen (2001) weighs 175.00 grams (5.626 oz t), a 40-coin roll weighs 280.00 grams, and a 50-coin full roll weighs 350.00 grams (excluding paper wrapper weight).

Open Coin Roll Calculator

With an official diameter of 26.50 mm and thickness of 1.81 mm, the Japan 500 Yen (2001) requires a direct-fit or ring-fit acrylic capsule matched to 26.50 mm. The planchet is struck in Copper, Nickel, Nickel-Brass, Zinc.

Match 26.50 mm Capsule Size

Have a Stack or Roll of 500 Yen Coins on Your Scale?

Enter your total gram measurement into our interactive Coin Weighing Wizard to calculate the exact piece count and total face value.