Anyone out there make such a holster?
They were made from 1885 to 1908 so any late 19th century/early 20th century holster design should do fine.
My choice would be something like this, made for the appropriate barrel length, of course.
(https://images.gunsinternational.com/listings_sub/acc_13294/gi_101220505/A-FINE-Vintage-Catalog-Holster-For-Smith-and-Wesson-DA-Frontier-or-New-Model-3-Smith-and-Wesson-and_101220505_13294_BFD7C1F10AD74DDF.jpg)
Alas, I've tried the New Frontier in several of my holsters that happily take a Colt Model P. The S&W with its high top strap and huge trigger guard just doesn't fit. Tried to post a photograph of a period holster that handles the enlarged trigger guard of a Bisley but, like my other holsters, won't accept the S&W New Frontier.
I got one from David Carrico, several years ago. http://carricoleather.com/westernbeltsholsters.html
You might try Rick Bachman of Old West Reproductions, as well.
come to think of it... I have an Old West Reproductions one as well I bought from Two Flints.
If that doesn't fit, I would guess he can make you one that does. He has a pretty extensive collection of originals for patterns.
David Carrico Leather is well known for their high quality custom holsters. They can create a holster that will fit your S&W New Frontier .44-40.
I have patterns and have made some. It's pretty much the same as for a Russian or a Schofield.
Carrico on the left, Old West Reproductions on right.
Second photo is the Carrico holster with my Russian.
Cliff Fendley is also a very fine choice.
And here is my NM #3 with a Webley holster which fits great.
Like button!