According to "GT40" by Ronnie Spain, GT40 P/1077 was dispatched on April 13, 1968 and sold originally to the Yamaha Motor Co. Ltd, Japan, and prepared to full 1968 works race specifications. It was sold off by 1969 and was due to be raced, but the entry was withdrawn. It was bought a few years later by another japanese gentleman who had it completely restored in a light gray with a broad red center stripe. The original colors were yellow with white stripe edged in black.
Reference: "GT40" by Ronnie Spain, Chassis Records Section