1979 Panasonic Boombox Stereo Magazine Print Ad - 8x11 For Sale

1979 Panasonic Boombox Stereo Magazine Print Ad (Black & White/Grayscale)
Something about the picture doesn't like my scan. That checkerboard pattern is not present on the ad or the scan I've uploaded. I'll add a picture from mobile for reference.
Measures roughly 8x11
Shipped similar to a comic book. Bagged and boarded in a cardboard mailer. Combined shipping always.