Hi, Uli and John,
It's really difficult for me to comment because until these last few days I had no idea things could be so complicated.
So many different forms
You really do need to be an expert! I have been reading what I could find via Google.
All I can do is hope that someone decides its close to something. I have looked at what Glendoick, (which is where I'm sure I would have bought it from), is selling now but nothing rings a bell. Some look very like others and more than one looks like mine.
Perhaps we will never know definitively.
I am away for a few days now so if anyone posts I will not be able to answer. My apologies.
Graham