Flandria is a brand of mopeds made in Belgium by the A. Claeys Flandria company. The company was founded in the early 1800's and produced many various products , including bicycles and mopeds. Presumably after a family trip to Bermuda where they rode on motorized bicycles, they began manufacturing the Flandria Bermuda moped. The bermuda was a swing belt driven motor but nonvariated, similar to the motobecane and peugeot but more similar to the batavus Laura m48. Later Hero/Ankur mopeds such as the panther may be a direct copy of the Flandria bermuda motor as opposed to the m48 or 102 as others have speculated. The Bermuda mopeds were imported from 76 to 79, and came in two models, the Hamilton and the upgraded factory accessories version, the Hampton.
One of the best sources of information is Myron's here: http://www.myronsmopeds.com/wp-content/uploads/2015/06/Info-Flandria.jpg
Also the factory manual can be found here: https://vintagemopeds.files.wordpress.com/2013/10/bermuda_flandria-owners-manual.pdf
Despite their enduring legacy, few flandria mopeds remain and little information can be found.
Flandria also made a 50cc single speed moped with rotary case induction through the crankshaft, and an automatically disengaging clutch function which came on the Flandria Apollo mopeds. more information can be found in this thread: http://www.mopedarmy.com/forums/read.php?1,3894663