For yard targets yes, Lord knows, working for CSX, ive spent many a day throwing the "back safer" hand throws. As far as the first set of photos, that's too easy. If you'll give me just a little bit to clear the clutter off my workbench, ill be more than happy to make a set just like them.
Your correct that the PRR yard targets didn't have holes, they were solid. The high stand mainline switch stands (ie. non-signalled territory) did have holes, so go figure. Some bean counter figured they were required. Ill do a set of yellow/greens and red/whites. Thank you for the kind words, I do certainly appreciate that.