Drop (not confirmed)

item	chance	amount
Adena	70.00%	59–136
Corroded Durable Leather	0.30%	1
Corroded Quality Leather	1/3333	1
Recipe: Durable Leather - Downgrade	1/111 111	1

Spoil (not confirmed)

item	chance	amount
Corroded Durable Leather	0.30%	1
Corroded Quality Leather	1/3333	1