A 16800 from 1991?

[xray7]

Methinks Sothebys would not get something like this wrong.

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.co.uk/ulk/itm/263740244040

 

[xray7]

Interestingly, pulling the Sothebys catalogue for that auction says lot 58 was a 16610 from 1995...