World of Monopoly.com

In February 2007, Geert-Jan Siertsema - NL found an English edition, with the London game board from before WW II bought by his grandpa with Perry (the Dutch distributor of the English Monopoly editions) in Groningen - NL.

With it was, except for a Banker's Tray (or Money Holder), an additional set of banknotes of the design of that time, and printed in black on coloured paper (except for the 500 note).

It is not traceable which of the two sets originally came with the game and which one with the Banker's Tray, but there is a remarkable difference between both sets.

The notes of one set have the usual mention Pat.app.for N° 3796-36.

While those of the other set wrongly mention Patent N° 3796-36.

However, such a patent never existed, because as Harold Lee, UK reports, the application of patent was applied by Parker Brothers on 7th February. 1936, and the patent was granted with Nr. 453689 on 16th September 1936.

It is likely that these bank notes may not have come from Waddington's.

Parker Brothers' error was also taken over in the first Finnish editions, meaning the rent on all 3 unbuilt properties being mk 4.000.

However, in the ±1944 edition an additional error appeared: the yellow bar on the Mikonkatu property deed is missing.