I decided to weigh the "violin" bows my mother sent recently. Although none of them have the rounded-edged frog, the "Bausch" weighs 68g and is slightly shorter than my known violin bows. The "E. Sartory Paris" bow is also slightly shorter than my violin bows and weighs a hefty 71g. Are these violin bows or viola bows? My known Hill violin bow weighs 61g and is a scant cm or so longer.