A reader of this blog asked a question I do not have an answer for, so I am hoping that someone will be able to do so.
How would the postage costs, consisting of Colombian national stamps, been settled between the private carrier and the Colombian Governmental Post, in the case where the private carrier not had issued its OWN stamps? This question is also valid for the time-period after the private carrier stamps had been prohibited.
1: Could the private carriers purchase stamps from the Colombian Governmental Post at reduced prices and was the letter, to be carried by the Private carrier, handed over to the private carrier unfranked? If so, did the Private carrier then affix the national stamps on the letter (purchased at reduced prices from the Colombian Governmental Post) and charge the sender of the letter the full rate?
2: Did the private carrier receive a certain amount per transported letter from the Colombian Governmental Post?
3: did the Colombian Governmental Post subsidize the private carrier?