Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
Stunning bomber jacket from the limited 2017 collection, a collaboration between H&M and The Weeknd. Light-sensitive, dense material, shifts from dark to light green, doesn't rustle. Perfect condition, hardly worn, kept as a collector's item)
