Comcast just sealed a deal to take full ownership of a majority of the floors at 30 Rockefeller Center — the famous home of NBC.

General Electric, which closed on the sale of its 49 percent stake in NBCUniversal, will receive $1.3 billion to give up ownership of the 30 Rock condos, which are a mix of tower units and studio floors.

With the ink on the 30 Rock deal now dry, Brian Roberts’ Philadelphia-based cable company Comcast is free to slap its name on one of New York’s best-known skyscrapers.

The transfer of ownership of the floors has sparked speculation about which corporate name will replace the “GE” logo now affixed near the roof.

The price tag was revealed in real estate documents filed with the city at the end of business today.

GE got a good price for its investment.

When Tishman Speyer and Goldman Sachs bought Rock Center, they used the $440 million that NBC paid for its floors to “recapitalize” Rock Center — essentially “saving” Rockefeller Center by using its own money while wiping out the mortgage holder, which was the REIT.

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