unclaimed goods

The dock management people use it as a storeroom for unclaimed goods.

"Anyway, I bought this car from a store of unclaimed goods.

Undelivered or unclaimed goods may be sold by the carrier in certain circumstances.

"That's a kiln where unclaimed goods are burned after a year has passed.

The San Francisco Police Department, for example, takes in about 3,000 items a month, and unclaimed goods are eventually sold off.

Undelivered or unclaimed goods (Condition 7)