MORGAN dual circuit master cylinder 1970 - 4/4 +8 PMA 100, there where numerous variations of this cylinder, , the cap was as in the pictures on the early ones, later they have a lid with a level indicator and wiring comectors, the  early reservoir was more rounded , some had the outlets on the other side, most of these variations were for low volume vehicles , Girling made the cylinder numbered PMA100 to cover all. you may have to put the pipes on the opposite side , you can use your old lid.  Newly produced, not old stock.
 This does not suit the late cars with the integral servo.