Offered to buy Ref 2852 14 SC and Ref. 2494-9

Hi Gents,

I've been recently offered to buy Ref 2852 14 SC and Ref. 2494-9 (photos of both below, starting from 2852).
The offer seems pretty high, the watches seem polished a bit and the crown in 2949-9 looks like a replacement also the dial is in a pretty rough condition.

I'm wondering what counter offer I should make (if any).

any advice?

2852

2494