| Kikuo Matsuda – Silver Dragon OU-31 Steel · G10 Handle Extremely Rare · Extra-Thick Blade | sunizumi.com | 3650 USD | — | — |
| Kiku Matsuda Kikuknives Soryu (Blue Dragon) Ginza Exhibition Edition | Popular Masterpiece Hand-Signed OU-31 Steel Custom Sheath Ultra-Rare Collectible | sunizumi.com | 2850 USD | — | — |
| Kiku Matsuda Kikuknives Silver Dragon Ginza Exhibition Limited Edition | Popular Collector’s Model Hand-Signed OU-31 Steel Custom Sheath Ultra-Rare
| sunizumi.com | 2750 USD | — | — |
| Rare Kiku Knives Big Boar– Kikuo Matsuda & Masayuki Matsuda OU-31 Custom Fixed Blade Knife | sunizumi.com | 2390 USD | — | — |
| KIKUKNIVES Karambit Hawk Rare Ginza Exhibition Edition – OU-31 Steel, Black G10 Handle, Personally Signed | sunizumi.com | 1680 USD | — | — |
| Rare Kiku Knives by Kikuo Matsuda “Yoroi Ryu” Custom Outdoor Knife – OU-31 Blade | sunizumi.com | 1680 USD | — | — |
| Hurricane By Kikuknives Japanese Fixed Blade Knife OU-31 Steel with Black G-10 Handle | sunizumi.com | 1380 USD | — | — |
| KIKUKNIVES AOKITAKAZE Rare Ginza Exhibition Edition – OU-31 Steel, Black G10 Handle, Personally Signed | sunizumi.com | 1295 USD | — | — |
| KIKUKNIVES ONIYANMA Rare Ginza Exhibition Edition – OU-31 Steel, Black G10 Handle, Personally Signed | sunizumi.com | 1195 USD | — | — |
| KIKUKNIVES HIEI W Rare Ginza Exhibition Edition – OU-31 Steel, Black G10 Handle, Personally Signed | sunizumi.com | 1195 USD | — | — |
| KIKUKNIVES ONIYANMA Ginza Exhibition Edition – OU-31 Steel, Single-Bevel Blade, Black G10 Handle, Personally Signed | sunizumi.com | 1195 USD | — | — |
| KIKUKNIVES Pathfinder Ginza Exhibition Edition – OU-31 Steel, Black G10 Handle, Personally Signed | sunizumi.com | 1180 USD | — | — |
| Back up Neo | OU-31 + G-10 Black by 松田菊男 Kikuknives | sunizumi.com | 995 USD | — | — |
| Kikuknives Akashoubin | OU-31 × Orange G10 | Kiku Matsuda Custom Knife | sunizumi.com | 995 USD | — | — |
| Kikuknives Tac Scout – OU-31 Steel, Black G10 Handle – Handmade in Japan | sunizumi.com | 985 USD | — | — |
| Limited EditionKiku Matsuda ShizugatakeOU-31 Outdoor Fixed BladeBlack Canvas Micarta HandleHandmade in Japan | sunizumi.com | 950 USD | — | — |
| Kiku Matsuda Kikuknives Police Compact Ginza Exhibition Limited Edition｜Popular Limited Model, Hand-Signed, OU-31 Steel, Custom Sheath, Ultra-Rare Collector’s Item | sunizumi.com | 950 USD | — | — |
| Limited EditionKiku Matsuda Southern CrossOU-31 Outdoor Fixed BladeBlack G10 HandleHandmade in Japan | sunizumi.com | 950 USD | — | — |
| Limited EditionKiku Matsuda — Masayuki Matsuda Fuuga H&HOU-31 Outdoor Fixed BladePurple G10 HandleHandmade in Japan | sunizumi.com | 895 USD | — | — |
| KIKUKNIVES SHINOBAZU Ginza Exhibition Edition – OU-31 Steel, Black G10 Handle, Personally Signed | sunizumi.com | 895 USD | — | — |
| Kikuknives Badger | SPG-2 × Purple G10 | Masayuki Custom Knife [KIKU-BAG] | sunizumi.com | 895 USD | — | — |
| Kiku Matsuda SHINOBI – OU-31 Steel, Black G10 Handle – Handmade in Japan | sunizumi.com | 795 USD | — | — |
| Rare Kiku Knives by Kikuo Matsuda “Yamaboshi” Custom Outdoor Knife – OU-31 Blade | sunizumi.com | 650 USD | — | — |
| Limited EditionKiku Matsuda × Masayuki Matsuda Gonzui14C28N Outdoor Fixed BladeLayered Linen Micarta HandleHandmade in Japan | sunizumi.com | 520 USD | — | — |
| Mummert Knives × Kiku Knives Titanium Belt Clip (Compatible with Kydex Sheaths) | sunizumi.com | 39.99 USD | — | — |
| Kiku Matsuda DOTS Belt DeviceLocking Tactical Belt Clip Kydex Sheath Mount System | sunizumi.com | 9.9 USD | — | — |