Michael Freeman has asked me to bring this to your attention.
"Could you mention that Heritage are auctioning next month the only known 1926 penny with Modified Effigy AND the 1927-36 reverseS. 4054A.In Long Beach auction no. 3042.I am sure lots of British penny collectors don't know this, and would be very interested in it."
Here's a link: http://coins.ha.com/itm/great-britain/george-v-modified-effigy-penny-1926-au-details-altered-surfaces-pcgs-/p/3042-31060.s?ic4=OtherResults-SampleItem-071515