Don,
Thank you. Looking further at the proof mark and comparing it to the pictures in the paper by Klaus and Dave Lindsay, I believe that it looks more like a C/ F instead of a C/V. However, C/F is not listed as one of the proofs assigned by Erfurt so I am a bit confused. It appears to have the shape of an Erfurt tool and is in the white from the little that I know of the tool variations. Am I correct in saying that the tool on the right is from Erfurt and does the proof look like a C/F to you?
Ricardo
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