Dave, they are scans from negatives, the only PS is levels and curves which i often do in the scanner ( I have very little PS skills)and i use Irfan View to resize and sharpen(you suggested sharpening to me some time back).
I would expect to improve them in printing maybe adding a toner to intensify them or even change colour to add mood. I have been printing them to 12*12 in the darkroom recently but the scanner can’t scan that size.