Russia,,,,10 blue,, overprinted wit "H-A" and others, fine mint

RUSSIA,,, (I had originally listed this under Bulgaria,,, but was kindly corrected,,,),,,10 blue,, overprinted wit "H-A" and others, fine mint,,,, but I have no idea,, ,,,,,,, I have no catalogue for these,,,, offered at bargain price,,,,, NO creases,,, NO thins,, perfect perfs as seen,,,, ,