And the other bits ...
No mention has been made of other parts of the message.
Why does it include a "Time of origin 1522" yet the Originator's Date is left blank? Could they be certain the pigeon would arrive home the same day ... unlikely. Could the date be taken from other messages ... unlikely, why would those message be certain to arrive. Could the date be in the encrypted text ... possibly, but why not encrypt the time. Why was the time important, but not the date?
What does the "1525/6" mean? Is it just coincidence that 1522 (time of origin) is close to 1525. Is it a time and date ... 15:25 on the 6th. Is it a reference number of the encryption scheme ... pad number and page.
What is the bit that looks like "lile 1625"?
Why is it written with two different colours?
Why is it written by two different people? The "time of origin 1522" and "1525/6" are different from the "lile 1625".
The message is on a pre-printed form. Presumably the message follows a standard format. These other parts of the message should have a standard meaning ... what are they?