I DO NOT SHIP OUTSIDE THE USA! I ONLY SHIP TO eBay VERIFIED ADDRESSES - IF YOU ASK ME TO SHIP TO A DIFFERENT ADDRESS YOUR ORDER WILL BE CANCELED.
As is, see scans, use your own eyeballs. The dark mark on the back of the stamp appears to be ink, which I cannot see from the front. It is not a gigantic hole or fungus or human/animal excrement. The mark is NOT justification for a super discount. If you cannot emotionally or mentally handle the fact that there is an ink blob on the back of the stamp then this stamp is not a good fit for you. Best wishes.
IMPORTANT NOTE: Please understand that the postal service in my area is horribly inefficient at this time and may result in your first-class package taking anywhere from 1-2 weeks to be delivered. See pics for condition. I do combine postage. No returns. Shipped securely, and charge includes tracking. Winners of multiple lots please wait for invoice before submitting payment!