this was the first E 329 I've seen, nice ! No knowledge to add, just some more watches ....
the Powermatics are lovely pieces, let me share one of mine, early without the "Powermatic" branding:
and the Futurematics; quirky, slightly crazy, highly innovative, what a watch ! have to admit to an addiction here:
some Cal. 815 and 825 Memovoxes and a Cal. 916
forgive the pic overload, hard to decide which to include; thanks again for widening my horizons, Fred