The Theander brothers first shop in Studiestraede 17 in Copenhagen.
On September 19th, 1966 the Theander-brothers bought B. Anthonys Antikvarboghandel. When Jens and Peter opened their Rådhusantikvariat it was to sell porn. Apparently they chose to keep the signs outside the door, telling bypassers about antique books, arts and souvenirs being available on the inside. Not true.
It`s unknown how long Rådhusantikvariatet was owned by the Theanders, but the store changed its name to Byens Antikvariat in 1973. Jens and Peter proberly had their adult bookstore in Studiestræde up until that point.