The standard "Dot Over Ninety" Bezel we offer has one major tell. The interior dimension of the bezel is 34.8mm, whereas a vintage bezel is 34.6mm in the same dimension.
This particular trait only applies to this part.
The 2915 bezel has three clear indentation marks on the back of the bezel. These are engraved so as to ensure their permanence.
The Base 1000 Tachymetre bezel clearly shows the interior of the insert – vintage bezels do not. The insert for this bezel is also of a different thickness than the vintage bezels.