Hungarian Overprint/Occupation Forgeries
Can someone advise me of a website or book that helps identify forgeries of Hungarian overprints and occupation issues? The Scott catalog mentions many times for many issues "numerous forgeries exist" or some such note, but never tells you how to tell the difference. A quick Google search provided little answers except for an identifier for some of the 1919 overprints as well as a book that was written by David Miles (I think) which now appears out of print. Any Hungarian collectors able to answer this? Thanks.