9CRA0412J501: Quantity 44. 9CRA0412P5J03: Quantity 9. A job lot of Sanyo Denki Server Fans. I suspect for less than 100 hours, but can't be 100% sure.
DC Fine Ace 20 40mm 109P0412H602 Sanyo Denki Server Case Fan 12V 0.11A 03802S
2x Sanyo Denki San Ace 80 Fans 9GA0812P2M0031 | 12V 0.35A Server Cooling Modules
Supermicro Sanyo Denki San Ace 40 9PH0412P3J033 1U Fans 4-pin server Cooling Fan
Sanyo Denki 9CRA0612P6K005 Dual 60mm Server Fan Cooling Fan 6-Pin 3.1A 12V San Ace 60
Sanyo Denki 9CRA0612P6K005 Dual 60mm Server Fan 6-Pin 3.1A 12V San Ace 60