Editing Monogram SMK derivative series (section)

==Nomenclature==
[[File:USw LXBB01+RB01 branding.svg|121px|thumb|Base branding is an unclear monogram]]

The base of each switch is branded with a monogram that appears to depict the letters 'C', 'S', 'C' and 'O', possibly in this order (reading outside to inside and top to bottom). These switches have never been found in any branded keyboard, so the identity of the manufacturer remains a mystery. Even the orientation of the monogram is not known for certain.

However, an interesting observation, based on an old NTC brochure <ref name="DT-A-III" />, can suggest that this switch, or at least the MX mount variant of this switch, went under the name of NTC mechanical keyswitch. The switch used in the [[NTC KB-5060]] keyboard has the same appearance and the monogram symbol at the bottom.