Looking at this connie, noticed some inconsistencies, specially the font. Wanna hear your thoughts...
That is definitely a refinished dial. The font in Constellation is pretty bad. It also looks like the hour markers at 12 and 6 are peeling up and casting a shadow onto the dial. Crown is wrong too. Here is a correct 2852 that I had:
505 were not used in that reference or in SS ( according to Desmomds ref list of constellation calibers) Absolute MUNTER