These ultra-thin genuine leitz filters are the only filters that fit on the 50/1.4 summilux lenses with 43mm filter mount that allow you to still use your ogiginal Leica lens hood. 

Green and orange available.   Good, used  $240 each

Silver UV, as new, in box $330

Leica E43 filters for 50/1.4 Summilux ver1 & 2

$240.00Price