What do you think it is? Any ideas?

I agree with James Robinson of The Classic Motorcycle when he identifies the unknown bike in the May 2022 issue of CBG seen in a shop window by Patrick Davis as a Mondial. I would say it is definitely a Mondial 200 from the mid-1950s – maybe an Extra Lusso or Gran Lusso ,due to the heavily valanced mudguards.

Best wishes, Gary Ryder.

Thanks, Gary. Excellent observations there! – Matt