Your search for "10063" revealed the following:

Extreme 10063 100Mbps BASE-FX MMF SFP Transceiver

SKU: NSH-6307
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Extreme 10063 100Mbps BASE-FX MMF SFP Transceiver

SKU: NSN-5738
Condition: New
Shipping: Overnight Options
Warranty: 365 days