: So is it correct that the so-called "Grail"
: Speedmaster is full of plastic parts?

: I see conflicting references about whether the movement in this one
: is a Lemania 5100 or an Omega variant, but I am curious. This is
: certainly one of the more coveted Speedmasters. I have not
: followed the market for these in a long while, but five years
: ago these were fetching twice the price of a 321 Speedmaster and
: three or four times the price of an 861 Speedmaster.

: Somewhat ironic that the collector's grail has this dodgy movement
: (unless perhaps it is an Omega variation, that has incorporated
: more metal and less plastic).

: Jeff

Jeff,

My years of experience with the Lemania 5100 is with the PD by Orfina model 7176 & 7177 military version. I'm not as familiar with this Omega model but from all indications it is the same calibre as it has the 24 hour indicator at the top as well as the central minute counter. Also, in this thread there's a link to a parts sheet for the Omega 1045 movement which shows the same Lemania 5100 calibre.

Despite the many movement plastic parts I can honestly say it can be considered a workhorse as I've seen watches with this calibre lasting over 35 years. That's pretty remarkable.

I think collectors look at the overall look and functions and, as such, both the Porsche Design and Omega chronographs have become classic collectables.

Regards,
Jack