COLLECTORS' ITEM - RARE SEIKO SLIDERULE PILOT CALCULATOR CHRONOGRAPH WRISTWATCH

BRAND/JENAMA : SEIKO SLIDERULE PILOT CALCULATOR CHRONOGRAPH GENTS WRISTWATCH
MODEL : 6318-7000
MOVEMENT/ENJIN :6318B - 21 JEWELS AUTOMATIC CHRONOGRAPH MOVEMENT
ORIGIN/BUATAN : JAPAN
NO. SIRI/SERIAL NO. : 625346
CIRCA/TAHUN : 1966
CASING/KEMASAN : SOLID STAINLESS STEEL
DIAL: BLACK/CHRONO DIAL IN BLACK
BEZEL: BLACK SLIDERULE CALCULATOR
MARKINGS/TANDA JENAMA : DIAL,BACK CASING, BANDS
BAND/TALI : NEW BLACK/RED LINING LEATHER STRAP
LUGS SIZE: 20mm
BAND WIDTH: 20mm
LENS/CERMIN : HARDLEX MINERAL
MEASUREMENT/UKURAN : 45mm X 44mm LUG TO LUG
WATER RESISTANT: YES
CONDITION/KONDISI : EXCELLENT WORKING CONDITION AND KEEPING TIME(RECENTLY SERVICED NOV 2011)2011)
PRICE/HARGA:RMXXXX(NEGOTIABLE)


Seiko Sliderule Pilot Chronograph is one of the rarest variant of 6138 model and among the most expensive vintage seiko chronograph. There are two variants of 6138, namely 6138A (21 jewels) and 6138B (21 jewels). This automatic seiko in-house movement is beating at 21,600 bph and it can be handwound. This double register chronograph was introduced in 1970 with feature of quickset day and date.

What make the collectors' craze for this watch is its sliderule bezel that can be used for calculating vital figures for aviation navigation for the pilots