Matrix A: 2-50908-CS-4 SSS Matrix B: 2-50067-CS-5 SS (etched)
Pressing Plant: Columbia Records, Santa Maria, California.
Matrix A: 2-50908-PR-1-1-1 PA PR Matrix B: 2-50067-PR-1-1-1 PA PR (etched)
Pressing Plant: PRC Recording Corp., Richmond, Indiana.
I’m not sure what factory sleeve is correct. Many both? I got report from another collector that his single came with the factory sleeve that came with the stock copy above.
Frank Zappa’s involvement
Frank Zappa produced both tracks. Frank Zappa and Ruben Guevara arranged “Mah Man Flash”