Add to Wish list Quick view Used Miraphone 670 BBb Contrabass Trombone $5,000.00 Used Miraphone 670 BBb Contrabass Trombone for Sale Late 1960s/early 1970s Miraphone 670 BBb contrast Trombone. The Miraphone 670 has become the staple BBb contrabass trombone, offering a powerful... Add to Cart