Tiny Letters (Latin Alphabet) in f101v1_f102r1_f102r2 ?

[Dobri]

If we entertained it, the "t" would have to be an "f". Generally "t" isn't much higher than "a" and not higher than "b", or with a curved top

It could also be a lowercase 'f' letter indeed. My guess that it could be a lowercase 't' letter was based on the observation that the vertical stem does not extend below the baseline of the adjacent letters. 

The Gothic style is characteristic for the tall stem (ascender) of the 't' letter. Also, the cross stroke of the 't' letter was low in the You are not allowed to view links. Register or Login to view. style which became common later in the 16th century.