Airplane Bookmark Engaging artisan sterling silver (NOT silver plated) airplane bookmark. The top plaque is beautifully adorned with a superb depiction of an highly detailed airplane. This item was made in the electroforming method. A wonderful item bound to make an excellent gift to your book reading friends. Measurements: Length: 14cm. / 5.512in. Weight: 16gr. / 0.514oz. Marks: 925 for sterling silver.