I received 9 axes (in one stack) not 50.
I have since made a second btch of Bronze Throwing Axes. This batch was (I assume) not 'Exceptional' , as I did not get the Exceptional messaging.
In this case I received 50 axes.
Another issue with this item however...
The description on the Bronze axes says 'Extra Ranged Damage: Piercing'
However there does not appear to be any extra damage (as I would expect from a Bronze claas weapon)
The stats that show up on my Character Sheet are identical to equipping copper throwing axes.
(When I equip a bronze Melee weapon the extra damage is shown on the Character Info sheet ie.as +2 Piercing Damage)