How a ‘gigantic’ mistake scrambled the sale of the ‘Kryptos’ secret code

Jarett Kobek was a “Kryptos” fan. Not one of the die-hards, working for decades to crack the final passage of the famous encoded sculpture at CIA headquarters — but in a dark period after the death of his father, he gave it a shot. Subscribe for unlimited access to The Post Save on unmatched reporting. Get your first year for $20