H.C.H. Brandt started trading in Sundet in 1881.

First in Tønsagergården, then Vengergården and Hoelgården, before he could move into his own house, Brandtgården, in 1900. The house had a shop on the first floor, and accommodation for family, trade officers and servants on the other two floors. On the south side there was a large barn with storage space, and a horse and cart that transported goods to the branch of the Gold Agency. His son, Christian Fredrik (Fredrich) Brandt took over the business in 1917. Then the name "Glassmagasin" was introduced.

Nevertheless, the business continued in roughly the same vein, that is to say, you could buy almost anything you could get hold of over the counter there. People did not trade in meters and kilograms in those times; 3 acres of cottonseed meal and 1 mark of coffee were bought. Vadmel is a thick woolen fabric that was widely used for clothing in the past.

In the 1930s, the range of goods changed in character and from the Second World War onwards it can be said that the business was a fully developed specialist business in glass, stoneware and kitchenware. His son again, Trond Linner Brandt, took over C.F. Brandt's glass magazine in 1955. He had the honor of leading the "Glassmagasinet" through its 100th anniversary in 1981.