why in the world would you want to ???
those are VERY tre chic lol sessy handles..
hate to see them retired.
are you wanting to switch out the Escutcheons and the tub spout ?
in the center of the handle is a button, use a knife blade to pop it off, undr it is a screw, remove screw, pull handle off
warning.....if it has been on there for ever, you may need a puller to pull it off,
Escutcheon should unscrew, tub spout also
i use a piece of leather to wrap around them ,so as not to scar the chrome
if you want to change out the valve with out tearing the wall out
remove all trim, cut a hole in the backside of that wall.
remove the valve thru the back.
replumb,