Type RDD
The RDD marking has double circles with the outer circle always made of multiple lines. It appeared in Tegus in 1891 and remained there throughout its 13 years never to be seen outside the city.

RDD1C Cove

In 1897 the font was changed to sans serif and the inner circle was edited to a single line.

RDD2


RC Cover 2

Early usage of the edits to RDD, March 1897. BH73 cancel along with A.R. for return receipt.



RDM
Used only in La Ceiba for six years starting in 1927 and ending in 1932. This marking has an outer circle of a single line and an inner circle of multiple lines.

RDM Cover 1



RDS
Used only in Puerto Cort├ęs for a year in 1936. Here both inner and outer circles have a single line.

RDS Cover 1

BH50 cancel and RDS registration marking.



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