What have your experiences been in dealing with The Pen Sac Company? Their web site is rather primitive, but apparently David N. buys from them.
I was just about to sac a late 40's Sheaffer piston-filler, then discovered that it takes a #17 sac, of which I have none. The Pen Sac Company apparently manufactures and sells the the sacs and don't find anyone else who does. Their sac prices in general beat everyone else's, so I might just stock up on sacs in general.
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