RC-1534-A Rudolph Étude cello 3/4 RC-1512-A Rudolph Étude cello 1/2 RC-1514-A Rudolph Étude cello 1/4 RC-2044-A Rudolph Conservatoire cello 4/4 RC-2044 Rudolph Conservatoire cello 4/4 RC-2044-EU Rudolph Conservatoire cello 4/4 RC-2078 Rudolph Conservatoire cello 7/8