Key legal question
Whether the brokerage clause entitled the broker to a reduced commission for the sale to Bank B.________/W.________ AG.
Extracted holding
The clause had to be understood as covering that transaction; the broker was entitled to the reduced commission.
Extracted reasoning
Based on the contract wording and negotiations, the owner had to understand that the broker should be involved even for a sale arising from the ongoing discussions with that buyer group. The lower court's interpretation was upheld under the rules of contractual interpretation.