The following (I hope) are pictures of a 1916 model J frame that I said I would post for Mark Masa. This picture shows the top 3 hole fender mount that is typical of '16 and earlier frames. The odd thing is, the forging is of the wide post '16 type.
I have just been informed that I posted this picture last April in the "Test" catagory. Dang, computers sure are smart.