Used good (second-hand)...
From Wikipedia, the free encyclopedia

A second-hand or used good is one that is being purchased by or otherwise transferred to a second or later end user. A used good can also simply mean it is no longer in the same condition as it was when it was first transferred to the current end user. Used goods may be transferred informally between friends and family for free as "hand-me-downs" or they may be sold for a fraction of their original price at garage sales or in church bazaar fundraisers.

Antique...
From Wikipedia, the free encyclopedia

An antique is an old collectible item. It is collected or desirable because of its age, beauty, rarity, condition, utility, personal emotional connection, and/or other unique features. It is an object that represents a previous era or time period in human society. It is common practice to define "antique", as applying to objects at least 100 years old. Collectibles are, generally speaking, the possible antiques of the future and generally less than 100 years old.

Used Merchandise Stores Sector ...
Found on 1800miti.Com, the Commerce Resource dB

This industry comprises establishments primarily engaged in retailing used merchandise, antiques, and secondhand goods