Double Pearl eye. Arcos Brasil Sterling silver mounted Cello bows are a quality handmade Pernambuco bow at an affordable price. Ebony frogs are fitted with Parisian eyes and sterling silver Ferrule. Windings are of matching sterling silver wire or imitation whalebone, and tip plates are made of mastodon. The wood chosen for the Silver bows are select pernambuco and tend to be stronger sticks. The Silver bows tend to be brighter sounding and quicker to respond on 'off-string' strokes.
About windings and fittings --
Windings - The decision by the bow maker to use one material over another on the winding depends on where the balance is and what material will benefit the balance of the bow best. Windings typically used are imitation whalebone, silver tinsel (on silver bows), or nickel/silver.
Bows described as 'silver' models may have windings of silver tinsel (silver on silk thread), whalebone (imitation), or silver. The frog and button metal will be silver.
Silver bows also use a higher grade of stick material, whether that be wood or carbon, and are considered a better bow not just because of the fittings, but because of the stick.