Citizen King Rotor Automatic 23 Jewels – Ref. 4-640055TA – Cal. 6400 – Juni 1969 JDM-Modell, in Japan revidiert Paaruhr "Tropical" refers to those extremely

"Tropical" refers to those extremely rare dials where an originally black tone uniformly fades to a warm brownish over decades – a look that is legendary on early Explorer watches and today is only found truly beautifully preserved in exceptional cases

high rate stability

The Lord Matic series was an important step in Seiko's development path: it introduced the Calibre 56xx – a precise

Caliber EM5V (Japan Mov't)

yet absolutely timeless thanks to its clean lines and high-quality steel bracelet

Citizen King Rotor Automatic 23 Jewels – Ref. 4-640055TA – Cal. 6400 – Juni 1969 JDM-Modell, in Japan revidiert Paaruhr "Tropical" refers to those extremelyAnyone interested in Japanese vintage watches from the late 1960s will sooner or later come across Citizen's "King Rotor" and once you've worn one on your wrist, you rarely forget it. The 4 640055TA reference offered here is one of the sought after large cased variants of this line, making it a clear recommendation for collectors looking for something stylistically distinctive beyond the usual Seiko path. About the model and its position in Citizen's