Personally, I find good, quality, honest colectors, selling on
ebayare immediately recognised.
"Small rust spot top left corner" "tiny crease across right quadrant"
etc, I have instant confidence of whom I am dealing with.
The rest are taken with a pinch of salt.
Most queries can be solved by contact with the vendor.
Recently daily auto search for "Hungary"
a listing showed "assorted Hungary stamps" which were all
Egyptian.