Sigma, one custom at a time.

The customs 1 knife

By year, newest first. Filter by kind, steel, finish or event; open a thumbnail for the workshop's photographs, click through for the record.

2016 1 knife−

Knife	Steel	Finish	Handle	Pivot	Shown at	Photos
5Sigma #2Prototype	M390	—	Carbon fiber, a texture that did not go into series	MRBS	shirogorov.com auction	5

Read on

• The Sigma lineThe production models, the tiers the line spans and the factory record.
• All customsEvery Sergey Shirogorov custom, prototype and collaboration knife by year, across every line.
• Authentication guideWhat can be checked on a Shirogorov, marker by marker, with a checklist for each tier.