This marker has been verified and exist in new Spearhead update (0.4)

Duffle Bag
Description
On the second floor, on the shelf.
W.K. Data
This marker belongs to the Duffle Bag 1 object.
Additional details
https://gzwtacmap.com/maps/lamang/place/1596Scan the QR code to open this marker’s details on your mobile device.