Weltmeister 3 Row Button Accordion Model 509 - Grey MarbleThis is a very popular model. There are 31 treble buttons with 2 sets of reeds and 12 basses. The instrument comes with two straps and an adjustable bass strap. Special colors are readily available with this particular model. Comes in GCF, FBbEb, ADG and BbEbAb tuning. - Professional  Button Accordion - Made in Klingenthal Germany - Fast Concise Action - Key of FA FBbEb - Includes Thick Padded BagWeltmeister, the oldest Accordion and Diatonic Accordion Factory of the World since 1852: the brand made in Klingenthal and honored throughout the world. Due to its excellent quality, Klingenthal has become famous in the whole world as a center of accordion production. Accordions consisting of approximately 2.500 components are built in about 5.000 mainly handcrafted work processes. Over 160 years of tradition and experience as well as creative input of technologies and the use of unconventional materials led to innovative solutions allowing the implementation of individual wishes. Millions of accordions have been exported from here to each of the seven continents and these have become witnesses to the diligence, imagination, and artistic skills of the accordion constructors here in Klingenthal. Accordions from Klingenthal stand for learning purposes, leisure time and professional orchestra music. For the specific types of folklore in each country we develop different types of production and tuning standards according to the diverse wishes an accordion player can have. Whether it is a beginner, soloist or simply an accordion player - Weltmeister instruments fulfill any claim.