was a prolific Austrian engraver who worked on dozens of stamps between 1947 - 1992.
First stamp was one in the set for the Austrian prisoner of war
Austria Scott B219
Here are some of earlier ones like these two from 1959.
The capercaillie is one of my favourite stamps,
superb engraving and rich colour.
And this Artists set from 1961 printed by two colour engraving.
Scott 662 - 665
This one for Day of the Stamp 1960 shows the engraver working on the master die for the stamp shown previously.
Note also that on every stamp the designer was Pilch.
There is basically no info on Toth on the net.The only fact I could glean is that he was born in 1918 and was still alive in 1999.
The last time I see his name on a stamp it's for this 1992 issue which has only the black portions engraved and the rest 4 colour photogravure.
Still engraving at 74 years old and a 39 year career, not bad at all.
UPDATE: Rudolf Toth
passed away in 2009 and is buried in Vienna.