This pen was made by the Christian Olsen factory in either 1946 or 1947. Unfortunately, unlike most Penol pens, there is no date stamped on the barrel. It’s the dark brown marbled variant of the Ambassador No. 5 model.
There are some marks on the blind cap, visible in the photo below, and the nib required some work. A new ink sac has been installed, and the pen has been cleaned, inside and out.