The Patina and Plexi Seiko Suwa vs Daini Protocol: The 2026 Brand History Guide The foundation of modern vintage Seiko collecting rests upon the intense, internal corporate rivalry between two manufacturing facilities: Suwa Seikosha and Daini Seikosha. Operating independently throughout the 1960s and 1970s, this competition drove the rapid advancement of Japanese horology, birthing the…
Master the Seiko 6139-6002 Pogue with the Patina and Plexi protocol. Learn to authenticate 6030T dials, verify the vertical clutch, and track £1,500+ market values.
The Patina and Plexi Vintage Watch Straps Protocol: 2026 Collector’s Guide Securing period-correct vintage watch straps is the final, most heavily scrutinized phase of horological restoration. As of 2026, authentic 1960s Swiss Tropic and original Seiko ZLM01 “Waffle” straps are incredibly rare, with uncracked, original-owner examples routinely commanding between £200 and £450 on the collector’s…
