Yes it does, The images on the Omega data base only represent one possible dial for watches, not necessarily all of the dials used for a particular model. Model reference numbers would often have dozens of different dial configurations. The reference refers to the case and movement , not the dial in most cases. Of course there were some watches that only came with one dial. This dial may have been refinished (it appears so). It also appears to be missing the crystal retaining ring.

 

Good point , does look like one.

 

Most collectors believe that the tell is that the dial doesn't say "Constellation Calendar" at the bottom. One one model of dial could possibly fit this watch, since it was discontinued after only one year and replaced with the 2nd generation Constellation (cal. 561). Watchco Australia has been selling NOS Omega service dials for years.

After reading this post, now I'm not so sure:

http://forums.watchuseek.com/f20/constellation-cal-504-question-602082.html

http://www.ebay.co.uk/itm/WORKING-OMEGA-AUTOMATIC-CONSTELLATION-DATE-WATCH-cal-504-/180740325058Purchases made through these links may earn this site a commission from the eBay Partner Network

As with most things vintage Omega, the only rule is that there is always an exception to the rule.
gatorcpa

 

There are some other small issues that I overlooked.

• The case looks like a melted ice cube. Too much of the (as Dennis would say) "Oooh, shiny" factor.
• The crown is from a contemporary Seamaster, not a Constellation.
• The hands may or may not be correct.

All of the above are correctible and would not deter me from purchasing the watch if the price was right.

Unfortunately, it rarely is,
gatorcpa