The Original "A.B." Rosins
In the latter half of the nineteenth century, Miss Amy Birch perfected a rosin for her own use. Her achievement, after long experiments, was a compound which was 'kind to the bow', unaffected by extremes of temperature or humidity and because of it's non-clogging characteristics, helped to produce volume and purity of tone. Professional colleagues persuaded her to make the rosin commercially available and when it was first marketed in 1896, 16 members of the Covent Garden Orchestra endorsed her 'AB' rosin in advertisements.

2062 AB VIOLIN ROSIN (box 12)
2063 AB CELLO ROSIN (box 12)