96. Agent estopped from denying principal's rights.

Where a person has admittedly acted as agent on a principal's behalf1 in any transaction, he is estopped from denying the rights which have accrued to his principal in consequence thereof, and from setting up any claims adverse thereto, whether in himself2 or third parties3.

This rule applies in particular in the case of goods which have been entrusted to him4, or in respect of which he has acknowledged the title of his principal, whether in actual possession of them or not