one of the nicest sets of 3 nail hole makers was in Australia, found it accidently or somebody from there posted it on here a few years ago.......best part was that it had 3 different spacings which would be very useful when doing assorted widths of clapboard sheeting.
Its not just the nail hole, its also the spacing visually that's important. Yes that's a little nitpicky, but it does make a visual difference.
Vintage reproductions in Colorado used to supply a set of 2 which is what I have. One tight and one wider.
Nail holes, IMHO, are not worth modelling. You can hardly see them in real life, but rusting nails leave visible rust streaks. If a wood building has a half-a**ed paint job nails will be buried. Add more paint coats and then you have to start LOOKING for them in real life. I consider more prototypical to have a few light ( a nail has only so much iron) rust streaks. Jose.
____________________ Junk is something you throw away three weeks before you need it.