Hmm - I just recently scanned some rediscovered 4x5 negatives taken in my roaring twenties. Don't know if that film could even be found today. I think I used an #89 filter (looks black unless you put a really bright light behind it).

http://www.pbase.com/dw_thomas/image/65973529


http://www.pbase.com/dw_thomas/image/65973532


http://www.pbase.com/dw_thomas/image/65973532

DaveT