![Image](https://i.imgur.com/lx4cGIT.jpg)
![Image](https://i.imgur.com/t4dk5k4.jpg)
![Image](https://i.imgur.com/UaRC2VH.jpg)
![Image](https://i.imgur.com/M6HmpcO.jpg)
The large red knob on the left side of the body adjacent to the handle operates a form of gear change. This has the effect of changing the amount of line that is retrieved per turn of the handle. If the knob is pushed in the bale carrier rotates twice per turn of the handle. If the knob is pulled out the bale carrier rotates 4 times per turn of the handle. The reel was produced in 1962.
I'm not sure what benefits this would bring in the real angling world but it's a novelty that didn't seem to catch on and I think this is the only DAM model with this feature.