‘Please note this lot is the property of a consumer.’

a 1967 print of a photo of a 1965 painting by gerhard richter of a cream sheet of paper being curled up from the lower right,  exposing an open cone of its greyish white underside and the underlying surface, where richter signed and dated it, 6.2.67, feb. 6, 1967
Gerhard Richter, Blattecke (Sheet Corner), 1967, offset print mounted on cardboard, 234 x 180 mm, ed. 555/739, sold at Christie’s UK in 2019

According to Section H1 of the conditions of sale [pdf], EU & UK buyers at online auctions conducted by Christie’s London have the right to cancel a sale within 14 days, IF the buyer is a consumer AND if the seller is NOT a consumer. This right is not available for lots sold by consumers. If the seller of a lot is a consumer, it will be stated, and/or the lot will be marked with the symbol, ∍.

But even if that weren’t the case, nothing says property of a consumer quite like the 555th example of a 1967 Gerhard Richter offset print published in an edition of 739, and which he subsequently declared to be open and unlimited.