Your search for "473842A.101" revealed the following:
Nokia 473842A.101 9.8GB 850nm MTRS-1A11-01 SFP+ Transceiver
SKU: NSB-0459
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 12.99
• 90 in stock
Call if you need more