Thank you so much, Christopher, for pointing me to the documentation.
And late on a Friday afternoon, no less!
The LC Classification and Shelflisting Manual says $b should precede the last capital letter.
It also says only the first Cutter number is preceded by a period.
Based on CSM, I would say #1 is correct:
BS191.5.A1 2010 |b N48
Electronic Resources and Metadata Librarian
University of California, Irvine Law Library
Dear collective wisdom,
We are stumped on the correct formulation of call numbers in this range.
The instruction says Texts. By date. Subarrange by place of publication
For example, which (if any) of the following formulations is correct?
|b 2010 N48
|b 2010 .N48
Thanks for your help,