Its a fair chunk of change but even without the moonphase these really look great http://www.ebay.com/itm/Universal-G...926850963?pt=Wristwatches&hash=item20cfe51793Purchases made through these links may earn this site a commission from the eBay Partner Network
I love me a vintage moonphase, but from a production numbers perspective, I believe the Dato-Compax is much scarcer than the Tri-Compax.