Regarding the OP watch; that's not the right bracelet (it should have a 1116/148 though some are found with a 1162 as seen on Speedmaster Mark IIs), and the box isn't original either...
Mine came on a 1162/172 but I don't know if that had been substituted during its life;
View attachment 800120
... after a good bit of searching, I found a NOS 1116 for it...
View attachment 800116
Click to expand...