Yes, the step-through bike in the picture looks to have a S-A combined gear and generator hub (model FG? Nice if a 4-speed!) And I second the rod-brake warning.
This site has some relevant stuff:
https://hadland.wordpress.com/2012/0...y-archer-hubs/
Look for the "GH6 Dynohub" item: that and the next 3 look very useful.
SturmeyArcher22 - you can upload pictures to your Gallery with fewer than 10 posts, and one of us can add them to the thread. May be a rare case of non-drive-side picture being preferred. You might link to this thread from your one in C&V, as some people there are probably familiar with these lighting systems.