My one experience with Catawiki was a complete turn-off. They listed a white gold Speedmaster early this year, so we're talking about a high value item. The listing had .jpeg images of 30-60Kb that were useless for assessing condition, the description was only in Polish and after using Google Translate to make sense of it, it contained around 10 words about the condition of the watch with the remainder largely irrelevant. Here's the translation. The best part of it was the backside comment:
"
The 18-carat white gold Speedmaster Professional Moonphase was only available for a limited time
and commemorated the 30th anniversary of the Apollo XI landing in 1969. Only 2 thousand pieces were taken!
I have been using it for many years and it was used only occasionally ... it has no damage or scratches ...
the mechanism is fully functional ... the price is about 20 years ago 11000-12000tys.dolarow ...
the hairpin itself costs about 1,200 euros! also gold!
I think that today is such a backside that it is no longer on the market and its value only grows ...
"
Being interested, I emailed Catawiki requesting some hi-res images and asking about a corrector, as follows:
Catawiki came back with:
Needless to say, no bids came from me. The bottom line is they don't even handle the merchandise themselves. The seller takes the photos and provides the description. Catawiki "experts" do nothing of any substance - they don't even get the description translated. This listing was also Berry Harleman's and I can only concur with what
@efauser said above.