Well, nut on end would not budge even in vice with breaker bar, so, banged on washer on piston end and it finally broke loose. This brake master is a Bonaldi Benditalia 1405996 (found on casting)/140595 23mm (found on end nut). It was apparently used on 208’s and some 308’s. You can see from the pic it consists of 3-23mm and 1-29mm seals. Found these seals as well as the seal plugs for reservoir lines at Dino Parts in GE.
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