what size ammo does a 32 owlhead use
.32 Short Colt centerfire I have used the 80 grain.
Impossible to answer without a detailed description of all features, condition, finish, box, papers, accessories, etc..
BLue Book of Gun Values
10-100 USD or so
what year was this 5 shot 12432-328wotg pearl handle 32
Without a good description, it's hard to give an estimate. You could be in the 100-1000 USD range depending on specifcs.
value depends on overall condition. the break open pistol stems from turn of the 1900's, and are not in the real collectible world......................