This is a SanDisk branded MiniSD card adapter. It is a special adapter that allows a MiniSD card to be plugged into a normal sdcard slot. MiniSD cards were a short lived card format during the 2000s that were used in phones and cameras. They use a different pin format than an sdcard and thus you need an adapter in order to plug them into an sdcard reader. The condition is new as you will be shipped an adapter that is in a sealed anti-static bag. The adapter in the photos is an extra I have. Please note, this is NOT a microsd card adapter.
eBay