Copt Howe 5
Image by fitzcoraldo
Copt Howe

For Jeff

Nice one Mr Fitzcoraldo.

Found it here:

http://home.freeuk.com/rooted/cupring1.html

Cheers, with much libating to boot, feth, shurrup Hob you're gonna waffle....(?!?)

Hob

OK, this is an "off the wall" suggestion. Could they prehaps have been filled with oil or animal fat to serve as lamps?