Dutch game computer museum Bonami has been organizing retro fairs for a few years now. For 2013 they decided to organize 4 fairs. These retro fairs cover a wide range of retro computers and consoles, from the Atari 2600 to the Commodore 64, from the MSX to the Super Nintendo. For a good impression you can check out photos from the last fair.
The third fair for this year is to be held this Sunday, on the 29th of September. On this fair there will also be a MSX presence with the following MSX groups:
Darkstone
MSX Club West-Friesland
Sander van Nunen mrc
DeltaSoft
The address is Sporthal Matenpark, Heemradenlaan 130 in Apeldoorn, The Netherlands. The venue is open from 10:00 to 16:00 and the entrance fee is € 2,-.
Relevant link: Bonami retro fair calendar