Persoit seems to have worked in this studio for at least 15 years (1823–41 according to Millant; 1828–43 according to Étienne Vatelot).
His best bows, are remarkably close to the François Tourte style (especially those with octagonal sticks), though there are small but telling differences: the octagonals are not so sharply planed; the heads are rather more squared; the frogs are more solid and with shallower throats; and the distinctive buttons have unequally wide bands which cover most of the ebony.
[3] Persoit's round-shafted bows are more personal and generally bulkier than the Tourte ideal.
His brand PRS is stamped on the stick under the frog and under the lapping, occasionally as many as three times, although sometimes not at all.
[5] An absolute Master who stands on that crest of the bowmaking elite hitherto reserved for François Tourte and Dominique Peccatte.J.