The only bikes I rode in the 1960's where all fixed wheel, as a young apprentice I could not afford the gears.
When I retired my hobby became finding and fixing up a few old warriors.
A few of my bikes can be seen at this link:
https://www.flickr.com/photos/moonm/...7628707166153/
I like the vintage Aussie bikes and I like Canadian CCM Flyers, I have (4) of these in various stages of work in progress.
A few of my bikes are shown in the attached photos.
Over 70 and still vertical.
Moonm