OK, I'm going to cheat and post my favorite pickups (plural).
The following N173 allowed me to complete the "Big 4" that I previously posted about
here.
Detroit N173s all date to 1888 and required either 35 or 25 certificates/coupons to obtain (pending when they were ordered) which brings me to another favorite pick-up. The following coupons all date to 1888 with the bottom three being unknown to me before this year and now reside in my collection. These are tough, some of them may be unique.
Lastly, further progress was made on the N333 Newsboy front including an N333 of Burden together with his studio proof and another Detroit!
Anymore, my collecting focus can lead to several month cold spells where nothing turns up but 2016 was a great year. Thank you to Henry Moses, REA, LOTG, & eBay!