There is no actual 'font' involved here. This is embroidery.

Looks like a generic monoline serif, like the upper case from a typewriter font, e.g. http://www.myfonts.com/fonts/urw/prestige-elite/ or a monoline serif like ITC Officina Serif http://www.myfonts.com/fonts/itc/officina-serif/ or Brix Slab Condensed http://www.myfonts.com/fonts/hvdfonts/brix-slab-condensed/
If you want to use it on an embroidery machine there are companies that sell fonts for use on the machines, e.g. http://www.8clawsandapaw.com/typewriter-alphabet-embroidery-design.html or http://www.8clawsandapaw.com/back-to-basics-embroidery-fonts.html
Don