I was scanning some Austrian stamps to post in the Engravers
thread and noticed some details I hadn't seen before.
Since most Austrian combination stamps from the sixties on
where printed one
colour engraved combined with either one or multi photogravure (sometimes with offset) I was surprised to see this one with 2 colours engraved
via the Giori process.
I must have looked at this stamp dozens of times in the last 40 years
and my eyes just saw the sepia engraved area and believed the other
2 colours were photogravure.
Austria Scott 957