I analysed my notes of the the drops from hunting bandits adventure:
gems: 0, 2, 3, 5 (common=2, very rare=5)
energy: 0, 9 or 18 (common=9, medium rare=18)
coins: 0, 5400 or 7750 (medium chance=7750)
(one of) truffle or prime cut: 3 or (very rare)6
(one of) sap or iron ore: 5, 7 or 10 (equal chance)
(two of) fancy/royal block, fancy/royal beam, simple/super glue: 1 or (rare) 2
(zero or one of) enchanters essence or longsword: 1
There was one instance where I got e.essence and longsword, but none of the sap/iron. I cannot confirm if this was a real drop or error in my notes.
There is also an additional drop that is not mentioned in the guide: black cow