This is an advertisment for Express Mail Service (EMS) showing
prefectural issues from 1995. I don't think it has much value from a
philatelic standpoint but you never know.
I don't think that this is a double transfer. Double transfers, from
what I understand, are repetitive but not progressive. Because this
"tag" does seem to be progressive, I suspect that it is caused by a
"sink" in the printing plate. In other words,...
