Probably between 1910 and 1920
Here is the serial number sequences:
1900 - 10000
1910 - 30000
1920 - 50000
1925 - 60000
1930 - 266000
1935 - 274000
1940 - 289000
1941 - 295000
1942 - 300200
1947 - 401000
1949 - 406000
1950 - 408000
1948 - 403000
1951 - 412000
1952 - 416000
1953 - 420000
Ole Bjur was born on 1968-09-13.
Hans Bjur has written: 'Stadsplanering kring 1900' -- subject(s): City planning
The cast of Heart Beats - 2013 includes: Taylor Bjur as Nick Kelsey Knight as Kate