I found two phillips single offsets today. A #1 and a #2. On allen wrenches, so, the other end can be used normally. I already had a #3 (and what must be a #5) phillips of the same general construction.
Are they that common? I guess I could mold some fingertip grips out of epoxy for them to make them easier to use.
The one has a number of 4653 on it, an a patent # of 2046840 also. The largest one has a 688931 on it.