Buying from Japan Grand Seiko Ushio 300 Diver Wins GPHG 2026 Sports Watch Prize
The Grand Seiko Ushio 300 Diver won the GPHG 2026 Sports Watch Prize. Specs, price, and how to source the SLGB023/SLGB025 from Japan.
ryuzuwatches
Buying from Japan Reference Numbers Bell & Ross Reference Numbers: Verify a Japanese Listing (2026)
Bell and Ross publishes no reference number key. This guide decodes the collection, complication, and color blocks and shows how to verify a Japanese listing.
Reference Numbers Jacob & Co. Reference Numbers: Verify a Japanese Listing (2026)
Jacob and Co publishes no reference number key. One part of the model number is decodable, and this guide shows how to verify a Japanese listing with it.
Buying from Japan Montblanc Reference Numbers: Verify a Japanese Listing (2026)
Montblanc has no public reference-number decoder. Here is what the 6-digit catalog number, the caliber code, and the serial actually prove before you buy from Japan.
Buying from Japan Yahoo Auctions Watch Scams: 4 Listing Tricks That Aren’t Fakes (2026)
Yahoo Auctions and Mercari watch scams are not always fakes. See 4 listing tricks: photo-only sales, shipping markups, and feedback farming, and how to catch each.
Buying from Japan AI Watch Authentication in 2026: What It Can and Can’t Prove
AI watch authentication in 2026: what eBay, Chrono24 and photo apps actually verify before you pay a private Japanese seller.
Reference Numbers Credor Reference Numbers: What a Japanese Listing Shows (2026)
Credor has no public reference-number key. Verify a Japanese Credor listing with Seiko model lookup, caliber dating, and collection checks.
Buying from Japan Antique Pocket Watches from Japan: Dating & Duty Rules (2026)
How to date an antique pocket watch from a Japanese listing by its movement serial, case terms like 金無垢, and the 100-year antique duty rule for the US and UK.
Buying Guides King Seiko Reference Numbers: Vintage Japanese Listing Guide (2026)
Decode vintage King Seiko reference numbers by generation (1961-1975): 44KS, 45KS, 56KS, 52KS, factory, caliber, and how to verify a Japanese listing.
Buying Guides Universal Geneve Reference Numbers: Verify a Japanese Listing (2026)
Universal Geneve has no official reference number key. This guide shows what actually dates a vintage Polerouter: serial ranges, caliber, and redial tells.