How do the "Late 2009" Aluminum iMac models compare to the "Early 2009" models that preceded them?: EveryMac.com
Identify your iMac model - Apple Support
Apple Imac 24" early 2009 - 2.66 ghz - 4GB - with Apple - Catawiki
Amazon.com: HumanCentric VESA Mount Adapter for iMac 24 Inch (Aluminum), iMac 27 Inch (2009, 2010, 2011), LED Cinema Display, Thunderbolt Displays, Replaces Apple iMac VESA Adapter MD179ZM/A, iMac VESA Kit : Electronics
Early-2009 iMac 24" for only $35! : r/mac
Apple A1225 24-inch iMac Core 2 Duo 2.4 GHz 2 GB RAM 320 GB HDD Early 2009 | RecycledGoods.com