just looking on the Fairy lamp website on something else and thought you'd like to see some Edward Webb Fairy lamp bowls that used a similar crimping.
I guess it could have been from any of the makers of that time as crimps were fashionable (the link shows 1896 I think) but it's a start

I miss Bernard when it comes to threads like this

he was a great fan of counting crimps and ribs etc.
Do you have Gulliver's Victorian Decorative Glass book? there may be something in there perhaps?
https://fairylamps.snappages.site/webb-edward