I've been going through some overprints from Peru. This set has caused me some confusion. I collect both the unoverprinted and overprinted stamp together but can't tell what some of the stamps were before the overprint.

To confuse matters, the same overprint seems to appear on different stamps.


The stamps are from 1975.
http://dl.dropbox.com/u/16510164/Ov...nts/PE03.jpgAs far as I can tell, the unoverprinted stamps are as follows:
Row 1: S3.80
Row 2: S4.30 No idea about stamp 4
Row 3: Stamp 2 looks like S4.30. Stamp 3 looks like S4.80. No idea about the other two.
Row 4: S4.60
Row 5: S4.60
Row 6: no idea, but not S4.60