In the course of the 1984 - 1987 restoration by Schmid , the organ was given an additional swell and more registers .
In 1959 , the instrument was completely restored by Orgelbau Schmid ; the interior of the organ was rebuilt , along with its console .
In the course of the 1984 - 1987 restoration by Orgelbau Schmid , the organ was given an additional swell and more registers .
In 1959 , the instrument was completely restored by Orgelbau Schmid ; the interior of the organ was rebuilt , along with its console .