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I made a modular display typeface in 2003. Based in a 3*7 grid. I retooled it a bit in 2008 with much more characters and several corrections. I like it and people have said me that I can sell it at a local foundry, but I'm afraid because it look too similar (although not exactly the same) to the Ivan Reschniev font and some logotipes, but I wasn't aware of those at first.
Respective specimens attached. The last one has latin-1 mostly and a few corrections.