I recently picked up this copy of RO73a on
ebay with a scribbled black manuscript cancellation and two vertical, magenta cancellations. All I can distinguish is "87" from the manuscript cancellation and it appears to have an "S" at the top of the left vertical cancel and at the bottom of the right printed cancellation. Unfortunately the "S"'s cannot be determined if they start or end the printed words. I hope someone will have just the printed cancellation on another copy of Ro73a to determine its meaning.
