Recently purchased this on HipStamp. I was leary from the getgo as it looked flat plate to me. Well I was right. Scott #578 needs to be rotary press coil waste 11x10.
This stamp is narrower by .5mm.
Also the perf 10 side gauged at 10-79 whereas a genuine rotary press coil gauged 10-81.
What was this altered from? Imperf stock? To my knowledge flat plate booklet pane stamps are not as tall as compared to flat plate sheet stamps.
Anyways this will be return for a refund.