I'd look for an eyelevel finder, since the Tn finders are usually in poor shape these days. Cosmetically, no, but electrically, yes. Frequently, the battery check button's mechansim will fail and prevent the meter from turning on. Most of them also have dirty/broken ring resistors, so the needles are erratic when they do work. Only once have I come across a T or Tn finder that was actually in good working order. Was on my second Nikon F body that I purchased from a camera repair shop in March or April 2007.