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.
Selling Electrolux E4TB1-6ST blender: • Box and documents included • Purchased at Gigatron for 8800 dinars • Thread made of hard rubber, not plastic • Used a couple of times • Price 3500 dinars • Old Town/Podbara
