Things you shouldn't use as a coaster
June 8 2012
Top of the list - drawings by Rembrandt. This slightly soiled example is yours for £50,000-£80,000 at Christie's next month. Of course, if it could be proved to have been Rembrandt's own coaster, then add a nought!
Update - it might indeed by Rembrandt's coaster (of sorts), for Christie's write:
The circular stain is an iron-gall ink stain, probably from the base of an ink-pot, so (while we can never know for sure) there is certainly a chance that the stain could be from the artist’s studio.