Sorry--real 7189As are extremely scarce, and getting more so every day. And you should be very leery of fakes. It's easy to print "7189A" onto a cheap modern EL84, and hard to prove it isn't real. Several Hong Kong dealers are doing this, and their "handiwork" is starting to pop up on the websites of American tube dealers. (I'd tell you who, but he'd just sue me.)Suggest getting VTV issue 8, at least you'll have good clean photos of the real thing for comparison.
Email me and I'll tell you which dealers to AVOID...
synth@metasonix.com