I picked this up a week ago & it appears in the Standard Encyclopedia of Opalescent Glass by Edwards & Carwile as Decorated Harlequin an English pattern, but no manufacturer. I know this is a long shot to say the least, but does anyone have any idea who/whom might have made it? Mnay years ago I had a smaller vase with this exact pattern & sold it (this one I'm keeping) to a lady in London & I hadn't seen another piece since. Raw pontil, slighty recessed. Glass is a bit seedy with a few bubbles & a speck or two of what looks like ash. Thanks, Ken