Forgive my teachiness.
I have noticed that hope seems to take precidence over analysis more and more on these boards and I find it frustrating. Perhaps this thread was not the place to make the point.
I do not profess to be an expert on engraving, or sandblasting for that matter. I do try to extend my knowledge by buying things and living with them to learn. Constantly picking them up and looking at the detail and looking at them in different light(s), etc. However, I also have to do a bit of reading to back up the thoughts and judgements that I make from time to time. I like to encourage analysis, rather than give folks the information. That way people should, I hope, learn more and have greater understanding.
You rightly say that your piece is engraved. I said in the other thread that the piece (Caithness) in question was sandblasted.
Sandblasting is the creation of an image through the controlled use of jets of sand, more often than not using a template, or resist, to stop the erosion of the surface where it should not happen. Sometimes several templates (registers) are used to create the desired effect, depth, and/or definition.
Engraving is the use of copper wheels to create an image from scratch - well from preliminary drawings which are then sketched onto the glass before work of cutting begins.
As for your piece - Well, what a whim! You can buy for me if you can get this sort of quality for 99p :thup:
Nigel