The original Vendome is one of the many styles produced based on the caliber 526. The first Vendome was catalogued in 1962, with variations in 1969 and 1972. A second series of Vendomes based on the caliber 540 was produced in the 1990s. See info/photos from Living On Air.
The 526 version spanned a wide range of serial numbers. I own model 5812 with s/n 282xxx with marbled columns and #5834 391xxx with fluted columns, and I recently sold 426xxx also with fluted columns. A third variant #5857 has fluted columns and a marble base.
None of these are common, but if I had to guess, I would say the 5834 is more often seen. With patience, these can be found in the $2000 to $3000 range. I believe the most rare, and most expensive, is the 540 model with the thermometer and hygrometer. I have seen these sell in the $4000-$6000 range. Lately, like many other things, prices are up, so shop carefully.