Cummings' City Post, 55L3, 2c Black on Yellow Glazed, Tied by "FREE" In Frame on Folded Letter, with "P.O. City Despatch Post" Datestamp

Figure 5, in Lyon's Article, "The City Despatch Post 1842 - 1852 Some New Perspectives"
Folded letter locally addressed in New York City, with red "P.O. City Despatch Post Mar. 25, 4 O'Clock" circular datestamp clearly struck at far right. The stamp, tied by black framed “FREE”, has large margins to just touched and shows surface rubbing, but overall a very fine example of this scarce usage.
One of only two recorded covers showing use of a Cummings' City Post adhesive in conjunction with the Post Office City Despatch markings, documenting the transition from Abraham Mead to Cummings & Wright.
The dated postmark (March 25, 1847) proves that Cummings & Wright had assumed operation of the post by that time, following Mead’s brief tenure after purchasing it from the New York carrier department on November 30, 1846.