Roofing nails through 95 year old tongue/groove soffits
Depending on how far up your roof is, if you paint it you probably won't notice the nails penetrating.

This is fairly common when there is no decorative soffit and just the underside of non plywood sheathing.  Yours did look surprisingly good before. I've never seen one that didn't end up looking like a bed of nails but the ones I see have typically been painted since the nails went in and while visible have a similar character to the un-sanded, partially peeled paint that was painted overtop on a lot of your woodwork (old, looking decent but missing finer detailing/workmanship).