Has your ad gone missing?
There are 4 items necessary for placing an ad:
Item Name & Description
Price/Trade (with either a price or options for trade)
Pictures (Either post them or state you have none. Do not offer to send them.)
Location
If any of those items are not in the Original Post aka OP, then the ad gets removed. So it is in your best interest to make sure those items are there or the ad will be removed.