I really wish OldLou were still around...
I just won a Perfectone cornet. I haven't taken any pics yet; these are from the auction:
In pic 2, you can see the grungy second tuning slide. It's longer than the one installed, and is stamped "LP". I presume this means that the high pitch slide is installed. I'm wondering if this horn only came with a replacement tuning slide for HP/LP, which would be great. FWIW, I played with a tuner and even in this config it mostly plays a little flat. The tuning slide is stuck, so, can't really fix that right now. Meanwhile, the quick change to A slide is pulled out about an inch, so my guess is a previous owner used the HP slide because it was in better condition, and pulled out that A slide to compensate. Considering that said person was goofy enough to install said slide UPSIDE DOWN, it seems plausible.
Anyway, I'm hoping that once I get all the slides pulled, that it will play in perfect tune with just the LP slide installed.
Oh, BTW, those nasty looking bronze, unplated pistons actually worked nicely just being oiled and wiped down with Blue Juice... because it was on my shelf at the moment.