Richard Diebenkorn Art Card: Ocean Park #79, 1975 (Hand Signed by Richard Diebenkorn), from the estate of UACC President Cordelia Platt, 1988

Richard Diebenkorn Art Card: Ocean Park #79, 1975 (Hand Signed by Richard Diebenkorn), from the estate of UACC President Cordelia Platt, 1988

Offset lithograph card (Uniquely Hand Signed by Richard Diebenkorn)
A coveted collectors' item from the late 1980s
Offset lithograph card (The card itself is open edition, but it is uniquely signed by hand by Richard Diebenkorn.)
A scarce collectible when hand signed, especially as signed artist cards from this era were not commonplace - especially not by Diebenkorn - and not with such fine provenance. 
Published by the Philadelphia Museum of Art, PA
This work has been elegantly float framed with a raised float in a museum quality wood frame painted bold blue under UV plexiglass. 
Measurements:
Framed
12 inches (vertical) by 10 inches (horizontal) by 2 inches
Signed Art Card:
6.75 inches (vertical)  by 5 inches (horizontal) 
The work depicted in this card is Richard Diebenkorn's masterpiece Ocean Park No. 79 (1975), currently in the permanent collection of the Philadelphia Museum of Art.  The museum acquired the prominent 93-by-81-inch oil and charcoal canvas in 1977, purchased with a grant from the National Endowment for the Arts along with funds contributed by private donors.
Provenance: 
This rare and coveted piece was acquired from the estate and private autograph collection of Cordelia Platt - who received it directly from the artist. Highly regarded in the autograph industry, Cordelia was the president of the UACC (United Autograph Collectors Club) and a well known dealer for many years. She was the official authenticator of Marilyn Monroe. This piece – with the gorgeous full Diebenkorn signature - had been in Ms. Platt's private collection for 20 years before we acquired it. Framed and ready to hang.
The "Ocean Park" series, began in 1967 and developed for over twenty-five years, became his most famous work and resulted in more than 140 paintings. Based on the aerial landscape and perhaps the view from the window of his studio, these large-scale abstract compositions are named after a community in Santa Monica, California, where he had his studio. The Ocean Park series bridges his earlier abstract expressionist works with Color field painting and Lyrical Abstraction. 
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RICHARD DIEBENKORN BIOGRAPHY
In the late 1940s and early 50s, Richard Diebenkorn emerged as one of the few successful abstract painters in the United States outside of New York City. Living in Berkeley, California, he developed a unique and respected form of abstract expressionism at a time when the style was gaining ascendancy. In 1955, he unexpectedly switched back to representational painting, a style for which, like his abstract expressionist work, he would eventually gain recognition.
 
This representational style would interest Diebenkorn until 1966, when he moved to Santa Monica, California. There, he would begin the famous Ocean Park series, which edified his status as a major artist. The works are not strictly abstract or representational but are usually seen as trafficking between the two concepts. On one hand, a viewer can sense the light, color, and even organization of the Santa Monica environment in which Diebenkorn painted the series. On the other hand, the sensations remain abstract and never directly reference a particular landscape.