Hi,
I've been looking through some sheets of 673a, ai and aii that I have (1 of each). On the 673aii HiBrite (HB) sheet, I've noticed that all of the 672's have the "Short Rigging" variety. I don't know if all the HB sheets had this variety and if it was common throughout the sheet or limited to just a few. If someone has some advanced knowledge of this variety outside of what is in Unitrade, please let me know. I would also like to know a value, if any different than the normal rigging stamp, as I will be listing all these sheets.
I've included a scan of one of the stamps, plus another, zoomed in on the short rigging. 2024 Unitrade shows the examples side-by-side on page 201 (scan below). An example of one of the stamps from my sheet is below that.



Thanks!
Steve