And this one... 1 ohm, somewhat historical, from 1930. This is the earlier earlier model, with a hard rubber top. It's not exactly as Rosa described, because the hard rubber top does not screw on, it just fits tightly, and the thread extending out the bottom of the central tube screws into a nut soldered onto the inside of the floor of the can, pulling the whole assembly down tight. Well, more or less tight -- the can is about half full of oil.
No red varnish or paint or whatever, though it's much darker inside than the newer resistors.
This one is two bifilar winds, both wound together in parallel, starting from the same point. One layer. The two pairs of winding ends are brought all the way up to the top of the side rails, possibly with a separately-joined piece of Manganin or whatever. You can see the abrasive tuning on this one, too; it's a bit more aggressive than the 10 ohm resistor.
I like it because it's a little bit historical: baked in 1930, sealed or checked in 1931, nice temperature coefficient (at least as they measured it at the time), and owned by the National Research Council. I don't think there were all that many of these resistors around at that time.
And this year-long wait after baking is what makes me nervous when you guys put your resistors through some kind of heating adventure, and then wait 15 minutes before measuring!