Font for text on back of calf please

Big Mom  Suggested by pilaster 
LHF Boston Truckstyle  Suggested by golfzulu 

Not quite the same, but similar.

Zoom this right in and you will see a lot of variation in the characters. It may be based on a font, but the ink artist has put a lot of 'artistic licence' into the work.
This one bears some similarity to the sample (bearing in mind the first comment) so may meet your needs.