Yes, sharing the slot also used to be the practice of CF Martin. The slots in the holes and the pins are shallower than they were in fully-slotted bridges and modern slotted pins, and the mass of the string was ‘shared’ between the bridge and the pin. I’m not sure of the dates they began and ended that practice, but I’m pretty certain it was a ‘half-way house’ position between slotted bridges and when they began to leave the pin-holes unslotted and using fully-slotted pins.

So, what point are you actually trying to make?

On another point, the forum rule regarding ‘Guest’ postings is that the ‘guest’ should use a ‘handle’ and stick with that same ‘handle’ each time he/she posts. Otherwise, those of us who are members have no way of knowing which ‘Guest’ they are talking to in the event of multiple ‘Guest’ postings to a thread.