I'm listing a total of 17 filters from my large format film shooting days.  From 67mm to 95mm, polarizers, ND filters, and a couple IR filters.  I combine shipping.

This is a 0.6 ND filter, requiring 2 extra stops for correct exposure.  Brass construction and great quality as typical for B+W.

I have enough cases for many but not all the filters/sizes I'm listing.  I'll ship filters in a case until I run out of cases.