Ryan Matthew Cohn





My interest in working with leather and metals began with a paid internship for a master silversmith in my early 20s. A job that initially began with enumerable hours of soldering & grinding, finishing & polishing evolved into a career designing accessories for Ralph Lauren, RRL, Tommy Hilfiger and a stream of private clientele. Inevitably this led to the opening of Against Nature, a gentleman's boutique in the classic Victorian tradition, located in the heart of New York's lower east side. At Against Nature we specialize in the finest bespoke suits, denim & accessories. All of our products are handmade in NYC.

In addition to my ready to wear line of jewelry I also offer custom made designs. Each piece of my jewelry is cast, sized, and finished to your exact specifications. Please contact me for more information.



Behind The Man

I've been an avid bone collector as long as I can remember. As a child, I would forage through the woods of upstate New York searching for artifacts to add to myalready growing collection of natural ephemera and osteological remnants. As I grew older, my interests gravitated towards the rarer and more mysterious anatomical specimens and medical antiques.

As a teenager, a girl I was dating gave me a human skull. She couldn't have chosen a more appropriate gift. Up to this point, I'd handled just about every variety of animal skull short of an elephant, but this was the first homosapien cranium I'd seen up close. I was intrigued, fascinated, and awe-inspired. Intoxicated. This wasn't just some half-eaten dog skull, this belonged to an actual person. As the weeks passed, I poured over the anatomical works of Leonardo DaVinci. I was absolutely compelled to examine every aspect of what made up the human cranium. Every different component, detail, and complexity that form this wondrous structure took my breath away.

Through my research, I was led to the discovery of 18th century French Anatomist Claude Beauchene's "exploded" skulls. This kicked my interest to another level entirely. Here I'd found the perfect merger of art and anatomy. From then on, I was determined to revive this lost art form. Relying on techniques gleaned from years of experience as a custom jeweler, each piece of metal is painstakingly cut, formed, and manipulated to perfectly match each section of the individual skull. I take great pride in making sure that each piece of osteological work I produce is uniquely one of a kind.


Contact Ryan

Sales & Other Enquiries





Against Nature
159 Chrystie St.
New York, NY 10002
(212) 228-4552

Doyle Mueser
19 Christopher St.
New York, NY 10014
(347) 982-4382


Site Credits

Design & Development



Sell Me Your Oddity


In addition to selling I also buy antiques and oddities. If you have something that may be of interest please contact me.



- Shrunken Heads - Victorian taxidemry - Medical human skulls and skeletons - Sideshow memorabilia - Dental and medical ephemera - Post mortem photography - Pickled specimens - Antique medical jars - Egyptian Mummies - Medical Mummification- Anthropological Artifacts- Tribal Artifacts