#3. "RE: F100, 17-35 AFS, SB-26 For Sale" In response to Reply # 2
The S/N only tells you the age of the camera since manufacture and might provide an idea of which modifications the body already has. In the case of the F4, the S/N is a good indicator since there were many minor cosmetic mods done to the F4. In the case of the F100, the main change was the redesign of the rewind fork.