Hi,
I would be very surprised if this turned out to have any relevance at all to Nazeing. It seems that the only link we have is that there might be a link to a tenuous date that has nothing at all do to with Nazeing glass works - 1612.
Neither Geoff Timberlake, nor myself can find a continuous link for Nazeing Glass going back to 1612. There is documentation that glassmaking in Vauxhall (where Nazeing's predecessors can from) goes back to 1612. However, the Kempton's who worked in that area, and started Nazeing Glass with the purchase of the Goats (a field on the border of Essex and Hertfordshire in Nazeing) do not have any history of glassmaking before around 1877 (from memory).
That said, even if we accept the idea, if it was say the 300th anniversary in 1912, then it would be Kempton -
not Nazeing. Going to the next possible date for a commemoration 1962 (for 350 years) we are not aware of transparent ribbed glass being made at this date. All knowledge suggests glass at this time was coloured with opaque enamels with shapes that have documentation, or that have been recorded by extrapolation.
Sorry, but an 'N' embossed on the piece, with a
possible 1612 is just too darn tenuous.
Although I should never say this, it does at least conform to what is currently known to say - no
not Nazeing.
Nigel
PS. Paul......who are the professionals that your calling on?? They sound very useful

N.