Hmm ... but now I just learned in another thread that blocks / coil pairs can be astronomically more valuable than singles, so my clever plan of "sort through them all and get rid of everything except the one best example of each type" will be rapidly going out the window if I'm not careful.
I begin to see where all those
ebay sellers with their rooms full of 50 years of accumulated philatelic detritus to sell got their start.