Topic: Does anyone recognise the marking on this malachite spill vase...

[Wayne]

...looks like a letter C with a vertical line running through it.  I've checked a few websites but not been able to find a match, and Ivo's book seems to be in hiding!

[Lustrousstone]

I think its IG, Imperial Glass
http://lustrousstone.co.uk/cpg/displayimage.php?pid=690

[bfg]

haha beat me to it christine, also page 71 Ivo's book

[Wayne]

Ah that's it, thanks a lot! 

[TxSilver]

Have to add that it is slag glass and not malachite, though the color looks a lot like it.