I NEVER noticed Mel Brookes isn't credited (how did I miss that?)
Agree re the film, and shot by the wonderful Freddie Francis.
PS- pretty sure its a photo
Thanks, Ari. The film was beautifully shot.
I was looking at the OS, again, up close with a magnifier and the imagery on this is looks to be cross-hatching (or photo software to create this look). It was this cross hatched design that I was always so drawn to, as I also really like etchings. I would guess the basis of the image was a production photo, similar to that used on the JP B2:
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Here are a couple close, closeups I took, of 3 areas: