I have had two of the Blue ones in the last Year - one found in a "posh" antiques shop by a friend and the other in the cellar of a not posh shop !
Then I saw these and the challenge of cleaning them appealed
Here they are now - I did do a U - Tube video of the cleaning - the blue one has a good gloss but with lots of small scratches - but i've only just cleaned it so it may improve a little