The Rolex Cal. 618 with Incabloc: “Type 4″
by Volker on Sep.20, 2010, under General
Nice detail view of a Rolex Cal. 618 / Type 4 movement, working accurate in a 6152/1 “Luminor Panerai” watch.
The characteristic features of the Type 4 movement are:
17 Rubis, Incabloc shock protection
(balance cock engraved with a “plus-minus scale”)
16 Lines, power reserve approx. 36 hours.
18.000 half-oscillations per hour.
You can read and see more about the different versions of Rolex Cal. 618 movements in Panerai watches in our 2nd book “Vintage Panerai – The References”.