Interesting John, I thought the of was okay the P for Palmqvist just got a bit lost with the date codes on a couple of sites, plus there are also codes for the type of glass, depending on which sets of numbers are the date codes I came up with 1940s or 1950s and a throbbing headache.
Looking at the details of the person who emailed 5 minutes before the auction ended to tell me it wasn't and said I would like to make an offer of £15 to be honest from what they were buying and selling nothing led me to believe they knew much more than I did about it.
Chris