Darkroom print from color negative processed as B&W

[jmoche]

It's a long story, but I have a few 120 rolls of Ektar that were processed as black and white in HC-110. The scans look surprisingly good, but my intention is to print them in the darkroom. If I try to print on Ilford Multigrade, will the mask totally mess up the contrast? The color of the mask looks suspiciously like the color of a safelight, making me wonder if I'll get anything at all. Ideas? Suggestions? Thanks!

 

[koraks]

Exposures will be long due to the mask, but it'll print OK. You may have to bump up the contrast quite a bit because C41 film doesn't have all that much silver in it.