I was interested to blunder across this, as a very infrequent visitor to the forum.

The only mentions I have of number 72 are from two patent specifications awarded to George Elliston and Sidney Fell in 1910 and 1912.
At the time, they sold through agencies up in Great Portland street, which was not uncommon for smaller makes.

No doubt though, if you turned up at the door with money, you could buy or order a machine: the weekly small ads from the motorcycle press from 1911 on seem to show that lots of the machines were sold within the general area.

I wonder if any pics of the works exist, or any press mentions?

Nick