For me, an insert is what gives a vintage Rolex its character. its amazing how the fade/wear of an insert can change the look of a watch. For the past year or so, I've been using a "ghost" kissing 40 (some call this a MKI but it really should be called a MKII kissing 40..but that is a debate for another day). The 40 is just kissing and it has a beautiful even fade.. very rare in this condition. But last week, I was offered a private sale of a special fat font that I debated in acquiring. Not only is it a kissing 40, but its also a kissing 50!. I have never seen one this fat, so i decided to make the offer, which was accepted. Here it is (on the right): As you can see.. extremely fat and the 50 is ridiculous: on the wrist: So paired with the "kissing 50" long 5 on my big crown, these are possibly the fattest of both kinds of inserts I have ever seen anywhere.