@falken @keyboards The original post was here: https://www.reddit.com/r/modelm/comments/1jkkmmx/found_this_for_20_bucks/ - it is reported to be a hybrid Unicomp M5-2. There is another page describing a "unique" hybrid, which it obviously isn't if there are at least two of them: https://sharktastica.co.uk/keyboard-directory/oGe0mYvU