While it looks like it's cut from a 1930s-era 4-in-1 Exhibit, my guess is that it's cut from a 1970s fantasy "4-in-1." The font's not right. I believe they came out in 1977 and were produced by Jim Rowe. He did use this image for Frisch, and the font matches. If that's the case, Frisch had already died, which makes the signature's authenticity impossible ...
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