Difficult question about daytonas pushers

[athom]

Hi mates,

I am asking myself something I didn’t find yet an answer about.

The 16520 came with ref. 401 pushers.

The 116520 (and maybe 116500 too) came with ref 402 pushers.

Can anyone tell me what is the difference between those two references ?

Many thanks fellows

[Tools]

The 16520 uses a completely different movement than the 116520 and later models, so it takes a slightly different configuration to actuate.

[athom]

The movements are different but the parts from the 6digits daytonas can be use on the 16520s like the crown, fat hands, pushers...just my question is about the difference (visual, aesthetic) between the 401 and 402 pushers...