The design is described by the NBTHK as 猪目引両文透 or Inome Hikiryo mon sukashi. The design seems to be an open work of Inome and Hikiryo. Hikiryo-mon is a general name for a group of some family crests. There is a feeling of a grave marker 卒塔婆 (sotouba) in this design, but it is probably just an anomaly of the design.
Kanayama designs can be for the most part, a little hard to read, but I think this particular one is a little simpler and the NBTHK’s reading seems about right. The general graphic employed in Kanayama tsuba designs display I believe the rustic quirkiness common in the Momoyama period but having said that, I still feel there is an overall simpleness to these designs. It may just be that they are displayed with an artistic bent we are not exposed to on a daily basis in these modern times.
The dimensions are 7.3cm x 7.2cm x 0.5cm.
Thank you for reading.