good spot.
The S&W books are out there. There has been a huge long discussion on the board regarding S&W Arabesque/Arboresque (embarrassed).
I wonder whether they had it verified from one of the pattern books?
Here's a link to that very long discussion
https://www.glassmessages.com/index.php/topic,55630.msg316884.html#msg316884The next posts show fairy lamps in a crackle in those colours from Schreiber & Neffen so worth reading the thread

yikes.
m