ryuzuwatches

Buying from Japan

Vintage Seiko from Japan: How to Date It and Spot Redials (2026)

Vintage Seiko from Japan: date it by serial and caliber, and spot the redials and franken watches common in Japanese listings before you pay.
Buying from Japan

Citizen Model Number Explained: Reading JDM Codes in 2026

Citizen model number explained for buyers of Japanese pre-owned watches: how the model code and caliber number work, and how to verify a listing before you pay.
Buying Guides

Omega Reference Number Explained: How to Verify a Japanese Listing

Omega reference number explained: how to read the 14-digit PIC, tell it from the serial, and sanity-check a Japanese pre-owned listing before buying from abroad.
Buying from Japan

Watch Not as Described from Japan: Refund by Payment Route (2026)

A watch from Japan arrives not as described. The refund you can force depends on how you paid: chargebacks, PayPal, bank wire and proxy disputes, mapped by route.
Ownership and Maintenance

Grand Seiko Service Cost from Abroad: Intervals & Calibers

What Grand Seiko service costs when you own the watch abroad: overhaul price by caliber, service intervals, and which Spring Drive calibers must go to Japan (2026).
Buying from Japan

Rolex Reference Number Explained: How to Verify a Japanese Listing

The Rolex reference number explained for buyers sourcing from Japan: what each digit encodes, reference vs serial, and how to verify a pre-owned listing.
Buying from Japan

US Watch Import Tariff from Japan: Assembly Country Decides (2026)

The US watch import tariff from Japan in 2026 follows the assembly country. Switzerland and Japan now share one rate: 12.5%, since July 2026.
Buying Guide

Japanese Watch Marketplaces: Yahoo Auctions vs Mercari vs Rakuma

Japanese watch marketplaces compared: Yahoo Auctions, Mercari, and Rakuma — what each is good for, and why buyer protection barely reaches an overseas buyer.
Buying from Japan

Casio & G-SHOCK Model Numbers Explained: Reading JDM Codes in 2026

How to read a Casio or G-SHOCK model number on a Japanese listing: what the -JF suffix means, why one watch has three codes, and the JDM caveat.
Buying from Japan

Shipping a Watch from Japan: EMS, Insurance & the 2 Million Yen Gap

Shipping a watch from Japan: EMS vs. couriers, Japan Post insurance caps at 2,000,000 yen, delivery times, and how to close the coverage gap on a high-value watch.