Date On Malwa Mahmud Shah II Falus

Hi again,

Apologies for so many coin questions of late. Am taking the opportunity while it's wet in Brisbane to process some of my Indian coins.
I have a Malwa falus GG#M172 that I suspect is dated 939 (with a backwards 3). This date would however be outside the dates indicated by GG. It may be possible it is 937 with the last numeral being the left upstroke of a V. Would appreciate some feedback from those with more experience.

Thanks