When I first became a cryptographic hardware collector, Mark’s Green Pages was a simple static-HTML web page. It started off as Mark’s Green Radio Page, and then turned into Mark’s Green Pages with sub-pages for radios and trucks. So when I wanted to add cryptographic hardware to the mix, I naturally created a new sub-page called Mark’s Crypto Page. I wanted a page banner that captured the essence of the mechanical and electromechanical cryptographic hardware that interests me, and I came up with this title image that melds together M-209-like printed text with Fialka-like 5-level punched paper tape:
A suite of tools for creating graphical representations of punched paper tape.