Was browsing my local antique mall today, and found 4 packs of these, $2.50 each. Anyone heard of them? Searching here and with the assistance of google didn't get me much...

Having found that, I've found absolutely 0, zip, zilch, nada on the blades, other than some auctions for the counter card pictured above. I'm not sure $10 for 16 blades is a good use of my slush fund.