Lens board fits Sinar and Horseman view cameras with a good snug fit to front standard.  Is factory pre drilled to Copal #0 shutter size.  Excellent cosmetic condition.  A few tiny wear marks and some glue residue on bottom right of front..

This Sinar product is a lens board specifically designed for use with a Copal 0 shutter, allowing photographers to easily attach the shutter to their camera and create accurate aperture openings for precise exposure control. The board is drilled to provide a secure attachment point for the shutter, ensuring stability during use. This lens board is a crucial accessory for photographers looking to achieve professional results in their film photography work.