X201, I think from about 2010 or 2011. It's a little slow, but with the ssd, 8gb ram (instead of 4) and running Linux Mint, it sure isn't bad for a 10+
Lenovo ThinkPad X201 Business Laptop, Intel Core i7-1st Gen CPU, 4GB DDR3 RAM, 320GB HDD, 12.5 inch Display, Windows 10 Pro , Refurbished Laptop
LENOVO THINKPAD X201. core i5, 320gb hdd, 4gig ram, webcam, 2.40GHz, win.10-mf. for Sale in Raleigh, NC - OfferUp