ah, so did you mean no 1481?
That no 1481 appears here in the pattern books no 1481 on page 169 of the actual pattern bookhttp://www.schreiber-neffen.com/attachments/article/10/PH1_1894-1895.pdf
So there must have been a different numbering system as it doesn't look like the item in that catalogue page does it?
Even so, if that catalogue page is Schreiben and Neffen then perhaps some of these crackle glass pieces may be Schreiben and Neffen and we just need to find the shape in the pattern books. No mean task as there appears to be hundreds to go through
Thank you so much for posting this link Jim. I wonder if quite a few crackle pieces have been misidentified and might now be corrected. But I think finding the patterns/shapes is going to be a hard task