There's a guy in northern NJ who built his repair business around little red stickers...he's swiped tubes among other shady things. Now those stickers are a warning label. I'd strongly encourage anyone who has a large stash of tubes to let someone else know, esp if your older and or in ill health. Some years ago when I worked for a vintage based pro audio dealer we got a few large boxes & totes of tubes from a lady who's husband passed away. We got like 3 or 4 boxes, and she said those were just the ones she hadn't thrown away!! To her they were worthless junk. Thankfully someone who knew better got involved and managed to save a few hundred NOS American & British tubes. Can't even ponder what went to the curb... Not the only time I've heard that story. Happens more often then you'd think. Way more often.