Draft record. We're still checking this one against its sources, so it may be incomplete. What's missing is listed at the bottom.

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Sherpa · Chronograph

Sherpa Aqua Graph MkIa

How to tell: Long orange-tipped paddle hands, arrow-shaped register hands, a small applied logo and a triangle pointer on the red ring.

Draft

Aqua Graph and Jet Graph

enicar.org adds 20% for MkI versions.

Figures as published, never re-priced by us.

Produced: c. 1963
Type: Chronograph
Movement: Valjoux 72, Valjoux 726
Case: Unknown
Diameter: 40 mm
Dial: All black, Black with silver registers
Hands: Paddle with long orange tips; unpainted chronograph hand with a lume dot, early ones spear-shaped; long arrow-shaped register hands, on later ones only on the 12-hour counter
Bezel: Black 60-minute outer bezel, two lume spots at 12; red ring with a triangle pointer
Features: Outer bezel, Red pointer ring
Factory refs: 072/002
Serials seen: 635.2xx – 635.6xx
Dated: 1963 (est.)
Made (estimate): 500 watches, estimated from serial ranges
References: 072/002, 072-02-02

Read the full story

Sherpa tool watch matrixenicar.org, Martijn van der VenThe full matrix of Sherpa tool watches from the Enicar book, free to download.
Aqua Graph, every generationEnicar 101Generation pages with serial ranges, case details and photos.
Aqua Graph MK IaEnicar 101

Spec	MkIa	MkIb	MkII	MkIII	MkIV
Years	1963	1964	1966	1967	1968 to 1969
Factory refs	072/002	072/002	072-02-02	072-02-02	072-02-02
Dated	1963 (est.)	1964 (est.)	6/66	6/67	3/68 to 5/69
Made (est.)	500	900	600	900+	1,900+