Well you've still got one over on me. As an eleven year old buying my first issue of Green Lantern in the late summer of 1963, I wasn't even aware of the existence of Showcase 22 let alone its importance. Had I even had such an awareness, I would have just pined for what to all intents and purposes was an impossibility. There were no comic shops at the time, no conventions, no mail-order dealers, no industry publications. There was nothing at all but trading with the odd other comic fan one might encounter. There was nothing "good" about those old days, other than the prices and the priceless (by present day standards) brand new comics that miraculously appeared on store racks each week!