The Lea Francis was the most expensive diamond frame bicycle in the world. Superb build quality is a given; the bonus is the fine details, each of them a Lea-Francis patented innovation, and all can be found on the bicycle featured here.
My favourites are: 1. The front brake whose linkage passes through the steering head – it’s connected to the removable mudguard extension, which lifts it up every time the brake is applied. 2. The LEAF aluminium pedals. 3. The gear trigger with ivory knob. 4. The Bluemels grips with removable caps.
You can see lots of photos and full details at The Museum