two Bulgarian stamps set 3
The one on the left was issued in 1983, the one on the right, 1986.
This came from a stamp album given as a gift long ago. I scanned these from 06/30 to 7/1/2020. You can see the nearly 700 stamps I scanned from this album sorted by country here on Flickr.
Click here to see all BULGARIAN stamps in this album.
