As you have probably noticed, the old bracelets use is different type of endlink that's permanent.
There's the endlink, a midpiece, and the springbar. There is also a center piece that wraps around the whole mess holding it to the main bracelet.
Both of my vintage 19mm bracelets have this system and each came with a broken midpiece. I have the new parts now and I will let my jeweler put it together.
One of my bracelets has one aftermarket endlink..so they exist..but I have no idea where you'd find them let alone the correct daytona part