Jerry. Thank you very much for the information. I realized that they
were not of too much value, and I only have a few of them, but it was
good to verify and to find out that almost every area, including the
Numerals of Colombia, have been covered by an expert.
Since you may have knowledge, I have one other subject. I found
the following in my collection, including a very nice description that
was meant to entice one to buy. It describes the Colombia Air Mail
Service in the early years (1920, on). Scadta is mentioned prominently
but I don't see any mention on the actual stamps. My Grandmother wrote
"Private Stamps" on the document, but I can't confirm. Do you have
any more information on them? What I find interesting is, "Correo
Ribon" across the wings, and "Servicio Semioficial" across the top.
If the article is correct, these are the Airmail Special Delivery Set
with a Registration Stamp.

