Green’s Dictionary of Slang

sower n.

[? it is full of fig. seeds, note later seed n. (1a)]

(UK Und.) a purse.

[UK]Bloody Register III 171: When they went to their biding (where they divide their booty) [...] they found three bungs, with sowers (purses), in each sower ten ridges (guineas) and two vid loges.