A person who has pledged his watch for so many piastres may ask pledgee to take a sword instead of the watch and if the pledgee returns the watch and accepts the sword, such sword thereupon becomes the pledge for the debt in question. The subject matter of the pledge may be increased by the pledgor after the conclusion of the contract. That is to say, a second piece of property may be added to the first after the contract relating thereto has been concluded, the first pledge remaining intact. The additional pledge is added to the pledge of the original contract, as though the original contract had been concluded with reference to the two pledges, both becoming one pledge for the debt as it stood at the time the pledge was increased. If such person contracts a further loan from the creditor of five hundred piastres, the watch becomes a pledge for one thousand five hundred piastres.
Any increase arising out of the pledge is part of the original pledge.
The pledgee may of his own accord cancel the contract of pledge. The pledgor may not cancel the contract of pledge without the consent of the pledgee. The pledgor and pledgee may cancel the contract of pledge by agreement. The pledgee, however, may retain the pledge after the cancellation of the contract, until the sum secured by such pledge has been paid. A principal debtor may validly give a pledge to his guarantor.