I just thought I'd offer them here before FeeBay........
There should be 10 good sets with a few maybe not so good, I don't know yet.
$40 a set plus a few "extras" for trade/resale (2/6's and maybe £1 too).
I post from the UK but I'd personally be happy to pay $40 hence the price tag.
I'm sure somebody will tell me it's too high but.......

A "smart" set of 5, well named I thought too.
Known between 1969 and 1973 for sure.