Looking at Paine's book, the main difference between the two models is the earlier version has the handle on top of the body, and the later one uses a side handle much like the Anniversary Speed. Also, the early camera has a 3 3/4" square lens board, rather than the 4" square board of the later model. Not much difference as far as mounting lenses, but a real inconvenience as far as switching lenses with a 4X5 Anny. I have a "Top Handle" 5X7, pretty much like the one Enno shows on page 2 of his Flickr pages. I recall it being the oldest Graphic I have, but can't really remember the approximate year it was made. 1920s I think. While searching for information on 5X7 Speeds this morning I found a couple of interesting pictures: http://www.shorpy.com/node/13932 and http://www.flickr.com/photos/9797476...7606266836904/