I encountered this too when ordering off of shop radio cast... Mine says "03020" on the back...
On Thrice's website it says only limited to 3000 pressings. Is this a mistake on their part?
"Along the tour, live audio was recorded at select stops and has now been compiled into Anthology, which will be released on Staple Records/Workhorse Music Group October 30, 2012. The live recording features 24 songs and will be available digitally, on two CDs, and as a limited edition box set containing four LP’s. The LP box set is limited to just 3000 stamped and numbered pieces and will include a 24-page booklet along with 2 black LP’s and 2 white LP’s all on 180 gram vinyl. The track listing and pre-order details will be announced in the coming weeks."