Thank you!

Tagliato Monogram  Suggérée par donshottype 
Astoria Antique  Suggérée par donshottype 
Spring Creek  Suggérée par donshottype 

I suspect that these monoline letters with split ends are part of a proprietary font used by a company in the machine embroidery business. The fonts are in embroidery CAM software formats that cannot be easily used on a personal computer.
Most of these companies do not provide more than a limited set of letters as teaser images to discourage copying by competitors.
An exception is http://www.annaboveembroidery.com/frmo.html where you can click on an image to see a full alphabet.
This font style is sometimes called "fish tail" in the embroidery business.
A similar font in a format usable by a computer (otf, ttf etc.) would usually called Tuscan.
A somewhat similar monogram font in otf format is Tagliato Monogram http://www.myfonts.com/fonts/monogram/tagliato-monogram/
Don

The monogram letters are loosely based on 19th century Tuscan twig designs similar to the one digitized by Spiece Graphics as Astoria Antique http://www.myfonts.com/fonts/spiecegraphics/astoria-antique/
Don

Spring Creek Plain by GarageFonts is somewhat similar http://www.garagefonts.com/index.php/fonts/overview/GF090002X1
Don

Here is a lead. This looks similar to a font used by Pottery Barn for monograms. http://www.myfonts.com/WhatTheFont/forum/case/542990/
Don