America’s most valuable postage stamp sold for nearly $4.4 million on Friday.
The 1868 one-cent "Z" Grill was sold as part of the collection owned by "Bond King" Bill Gross, who co-founded asset management firm Pacific Investment Management Co., otherwise known as PIMCO.
The winning bidder chose to remain anonymous.
It’s the first time the stamp has been sold in 26 years, and among stamp enthusiasts, it is considered the most coveted. The "Z" Grill stamp completes the entire...