This G-Claron is an older Dagor design, not the much more common Plasmat design. I have never seen another Dagor model come up for sale. I bought this lens many years ago and then found a matching lens in Compur #2 shutter, but the newer lens was a Plasmat.
This lens covers 8x20 sharply when stopped down. Here though is an image shot on 4x5 film:
