About the ink spots, basically yes. There may be very rare exceptions. Calipers sound like the wrong tool to measure stamp designs. There are specialized rulers available, but a simple ruler with tenths of millemeters would be aok.
It has always been my understanding that ink present on the back is an indication of flat plate printing, but that not all flat plate printed stamps necessarily show the ink remnants. So the absence of the ink spots does not rule out flat plate.
Stamps made on the flat plate press were printed and stacked on each other. It would transfer some of the ink that hadn't dried to the backs of the sheets. I've found a few that didn't get the transfer but it is a small percentage. They took these sheets and applied gum to them. The rotary press stamps were gummed before printing. They would never have gotten any ink on the back.
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Stamp Community assumes no liability for errors. Copyright 2005 - 2026 Stamp Community Family - All rights reserved worldwide. Use of any images or content on this website without prior written permission of Stamp Community or the original lender is strictly prohibited. Privacy Policy / Terms of UseAdvertise Here
Posted 05/27/2013 07:17 am
