Yes, thanks for posting your research, you had fun

The acid frosting probably accounts for the tide line on the dolphin in my previous link, presumably they dipped the stem and foot into an acid bath up to the tide line.
It is interesting that they have used two techniques to obscure the glass on the same item. Even when the facilities are available for acid frosting, they have still chosen to also use mechanical grinding. It must have been a more cost effective solution, showing acid frosting isn’t necessarily cheaper or quicker than grinding, it probably depended on the application.
Rebecca looks quite strong
