Vacheron Constantin 40s Caliber 458/3B

I have just inherited a Vacheron Constantin watch from my grandfather.  He passed away before I was born so my father kept it with him for more than 41 years.  I took it to a local watch dealer who told me it is from the 1940s, Caliber 458/3B, and has the following numbers inside the case: 488525 and 324431.  The case is made of yellow gold aprox 3cm in diameter.  I have not been able to find details about the watch online, its price, servicing, parts, etc.  I hope someone on this forum can help me.  Thanks in advance.
amongst the numbers provided which is the
02/20/2014 - 10:52
case number which is the movement number? It would help if you posted a scan of your watch as well