Artnet ran a little analysis on the market for Peter Beard’s photocollages. Christie’s has this smaller example of  a work from 1968 (not the record-setting work that is much larger and a different image) in its April 5th photography sale.  AIPAD may have additional works on hand too:

The art market for Beard’s photographs has seen a steady increase since 2009, following the financial crisis of 2007 to 2008. The sell-through rate for 2011 and 2012 were 95% and 78%, respectively. Additionally, four of his highest sale prices achieved at auction occurred from 2011 to 2012, including his record setting work Orphan Cheetah Triptych (1968). In 2012, this collage sold at Christie’s New York for US$662,000, which was over four times its high estimate. Beard’s overall total sales volume for 2012 reached over US$3.4 million, placing him amongst the top 10 photographers sold in 2012.

Art Index: Peter Beard (Artnet)