Having owned couple of acid bathed coins I agree with Rob. Acid doesn't shear off the main design leaving the original thickness - it attacks on all axies, leaving a much thinner coin with the elements of all the original design still clear enough to see, including the legend.
Maybe it was just me, but many of the images did seem almost identical. I didn't complain, but then you made the remark about a lack of responses, so I just theorised about why that might be? Good luck anyway
My 2009 first edition has some colour pictures it's true, but the majority are black and white. Is this new edition all in colour, or is it the same as the 2009?
I found maybe 3 or 4 as a schoolboy in the late 60s, and only because few people knew about it (an issue of Coin Monthly in 1968 first drew my attention to it). Sadly my examples are in average circulated condition - high grade examples seem few and far between.
I rather think the silence may be more down to the sheer flood of posts and pictures you've made just recently? I got halfway through yesterday and then gave up.
Your coin is not the "normal pairing" apparently (from those pictures), but shares the same pairing as the I over T - which suggests that more than one die was used for that pairing.
Very popular. I remember as a schoolkid in the late 60s that Whitman folders and Sandhill cases were THE main holders for coin sets - the Whitmans for date runs, the Sandhill for type or year sets.