Production started in 1936 and closed down in 1970. From the beginning there was only one outfit without number, but was later numbred II (2). Then an outfit "Junior" that has the same contens as later No. I (1). Soon after came also No. 0, 1, 3 and 4 in gen. 0. Parts and contents changed and there are 5 different generations of TEKNIK over the years, named 0-4 (by collectors). Appr. years: gen. 0 = 1936-40, gen. 1 = 1940-45, gen. 2 = 1945-50, gen. 3 = 1950-55 and gen. 4 = 1956-70. The most common is the latest generaton no. 4.