Cheers Redshade. I've seen some Dell as well; a few with just pence & a few with pence and cents. Also some Gold Key & a ton of Charlton.
Marwood deserves serious credit. I'm using his lists to compile my own Excel charts for each publisher, listing price changes by issue number. It's a PITA & I'm only doing about a third of the work because Marwood has already done the hard stuff.
Maybe a miscellaneous pence thread would be an idea. Just to catch all of the oddments.
Anyway...
Getting back on topic. Four of my favourites. These are a good example of the whole black plate swap out idea. Printed at the same time as the 30 cents copies, and, in the case of #s 2, 3 & 4, at the same time as the 35 cent price experiment copies. So, two slug changes.