340ci AFB Carb: Approx Value ? Its Big, Its Rare

Without a picture and a number we/you don't have a clue. 340's never had a AFB. Dana is right. 68-70 had AVS's and 71-74 had Thermoquads. The only Holleys on 340's were the 6 Pack carbs.
Sorry Toolman, for once I'll disagree with you: it IS off a Factory 340ci - Sorry I can't argue with fact & when I can get to it I can give a Carb # started I think with 4 ? forget right now & of course ended in "S"...
There's even something you don't/didn't know & the old adage ' never too old to learn' is apt.(& IF I disclose what/where/how it/340 it came off of, there goes my honey hole) given plagiarists etc on the net & Police advise re the internet involved burglarly, Seeing its not currently for sale, I'll pause pondering how much info to display ( I also lost a Pair of MINT irreplaceable reclining musclecar front buckets with rails that are unobtainable now, worth over $2,500 minimum for a junker set, that I thought no one would've even noticed), so once bitten twice shy, if this AFB is talking serious Coin.
Thanks for your input (again)
Trev