Vintage Beau Sterling Silver Double Hammered Link Many Airplanes Charm Bracelet

This vintage sterling silver double hammered link airplane charm bracelet measures approximately 7-1/2 (19 cm) in wearable length. Weighs 46.6 grams. While the bracelet is Beau Sterling, I’m not sure if all the charms are. It has 17 varying airplanes of different styles. One of them does not appear to be sterling silver. The item