Cancellation franked on the obverse/reverse of envelopes/cards.

An interesting observation.... 

Scarcely are the circular dated stamps (cds) seen on the obverse of Envelopes and on the reverse of Postcards, in the earlier period of 1888 to 1913.

 Delivery cds are to be franked on the reverse of the envelope and in the case of postcards, on the obverse side. 

ENVELOPES

 

POST CARDS 

Envelope