Hi,
I have no references in regard of retailing business and trade between Vienna silversmiths, so we can only speculate.
Sometimes we depend on logic, like in this case:
http://925-1000.com/forum/viewtopic.php ... ch#p138023
Far more likely a firm from Budapest would have retailed Wilkens of Bremen than vice versa.
If the same logic is applied to your spoons, Klinkosch was far more famous and had huge production, so it`s more likely his silver was retailed by other Vienna silversmiths in their shops.But again, it`s only an assumption.
Regards