Assuming you're considering buying the watch, I`ll give a word of advice.....Don't!

The watch is a scruffy example that's obviously led a very hard life, little wonder considering the age (1950s). The gold capping is badly worn on the lugs, the dial's heavily aged, I can`t see anything remotely attractive about the watch. If it was steel it might be a better proposition, but heavily worn gold-capped watches are best avoided in my opinion. See the wear-through on the top left lug in the pic and you'll see what I mean.

If you wish to buy a vintage Constellation do yourself a huge favour and buy a top-notch example, the best you can afford. Trying to buy bargain vintage Omegas usually ends badly. Be sure to handle the watch before committing.

By coincidence I have a very similar example on my workbench at the moment that's in better condition, it has sentimental value to the woner so it's worth restoring.