I came across these stamps on eBay which were described as unofficial so that’s a good start but the buyer is implying that some were used as real postage on covers, well there is absolutely no proof of that.
After the occupation of 2003 a lot of these fake overprints turned up but were quickly rejected as fakes. These are examples of this.
 
 Don’t get me wrong, I like these stamps, I think they can be considered as work of art, but as always, I do not like it when sellers make out as if they are selling something which it isn’t.