Contract Validity and Breach of Sale Agreement

The case involved a dispute over the validity of a contract to sell a building, where the seller subsequently transferred the property to a third party after accepting a deposit from the initial prospective buyer, leading the latter to sue for contract performance and damages. The court, upholding the lower court's decision, found that the initial agreement, although styled as a promise to sell, constituted a final and binding sale because all essential elements, including the object and price, were agreed upon, and the transfer to the third party therefore constituted a breach of contract, justifying the buyer's claim for damages but not necessarily specific performance given the subsequent alienation of the property.