QUOTE(Scottishmoney @ Oct 12 2007, 08:27 PM)

I am not sure if there is a price difference for them, which might be why the different serial number patterns are not listed. But they show both 6 and 7 serial number notes in the catalog, all of mine are 7 letters, which I presume is later issued notes.
I don't think it is like Romania P-83, 5 Lei 1952 where the colours of serial numbers were red at first and not for very long then they changed them to blue serial numbers which there are many more of.
Siluska, if you are Romanian, you can read this
http://transylvanian-numismatics.com/phpBB...57&start=90 topic from Transylvanian-numismatics forum. There it is an information from a Slovak source wich says that both red and blue serials from 1952 notes are printed by GOZNAK in USSR (and the bulgarian czechoslovak and albanian notes too!). Information is from "Studii si cercetari numismatice IX". I know that Buzdugan says in "Monede si Bancnote Romanesti" that the red serials were printed in CS, but he can be wrong.