Buying the right crown for a Pulsar/Seiko VX42 series watch

[ponchojack]

I have a Pulsar VX42-X216 divers style watch (50M).  The crown fell off and I'm not sure what kind of replacement crown to purchase.  I understand sizing in terms of tap size, width, tube size, etc.  How do you know if the crown should be flush, short post, long post, etc.? The stem appears ok, but it is flush with the end of the case tube.

Any help to this newbie is appreciated.

Ponch

[jdm]

Just get one that looks like

[ponchojack]

Yeah,  I have seen that pic.  I know the crown is 4.5mm x 2MM tap10 ( outer tube diameter is 2mm).  The question is what kind post system is used, and is that simply a flush seal, a short post, etc.. Here is a link that shows the different types.  https://blog.esslinger.com/watch-crown-illustrations/

[jdm]

Check "japanese waterproof crown" in link posted. All the others don't apply for a reason or another.

FYI we have a section here where most members like to introduce themselves.