This kind of glass is sought after and worth a few bob now, particularly the best pieces, if you have any in your attic, or anywhere else for that matter.
" During the 1920’s a type of glass known as Monart Ware (later Monart Glass) was produced by the company of John Moncrieff Limited of Perth in Scotland. Production began in 1924 following the “accidental” making of a prototype by Salvador Ysart, a Spanish born glassblower employed by the firm, which was seen by Isobel Moncrieff, wife of the proprietor. The name “Monart” was simply formed by taking the prefix “Mon” from Moncrieff and the suffix “art” form Ysart. "