Details Features Bronze valve section with nickel silver endings Nickel silver outer slides one-piece tuning bow Options ML Bore of 11.7 mm or L Bore of 11.9 mm bell made from yellow or red brass, nickel silver, sterling silver bell thickness of 0.5 or 0.6 mm outer slides with bevelled edges lower screw-cap in three different “heavy” versions lower screw-cap with sloping edge blue anodized valve tappets pistonheads with mother of pearl inlay finish of polished brass, silver or gold plating, brushed gold plating Prices price list