Our team members
Pieter-Jan Louwerse
Manager of valuation and auctioning
Johan de Ruiter
Managing director
Jaap de Ruiter
Founder
Tim de Gooijer
Valuer antiques and silver
David Megchelsen
Valuer of gemstones
Leendert-Jan de Ruiter
Swarovski advisor
Sjaco de Ruiter
Commercial director and coins, jewellery and diamonds advisor
Jaco Groeneveld
Banknotes and coins advisor
Leon Steen Redeker
Watches advisor
Arjan Herweijer
Jewellery advisor
Leon de Ruiter
Director and diamonds, jewellery and watches advisor
Diana Michelsen-Visser
Sales advisor
Geertjan de Keijzer
Valuer of gold and silver
Arjan IJsselstein
Assistant auctioneer
Jos Lock
Assistant auctioneer