Hi Ace this is more than likely an aluminum shell not a steel shell most Supraphonics are aluminum shelled models.

Kitchen magnet will stick pretty strongly to steel shell. The chrome on a COB shell will have a small amount of attraction to the magnet, but very slight only. Aluminum shell without chrome coating will not attract a magnet.

If you find a steel 402 jump on it because that would be much rarer than brass. These are made from aluminum so a magnet test isn't going to help.

Brass shelled drums of the vintage in question generally had an extra badge stating they were a "brass edition". You are most likely looking at a standard aluminum 402...which are great sounding snare drums...that's what Bonham used after all.

Most likely this is an Aluminium shell. Definitely not steel.

You could ask for weight of the drum to make sure.

A brass drum will weigh about 4,4 kg, an aluminum shell probably 3,5kg or so. Anyway quite a difference....

it has lug gaskets, a modern butt and not drilled for a muffler so its a modern aluminum snare. a modern cob snare will have the 2nd badge on the back.

i might be selling my extra 402. if interested PM me.

No Supraphonics are steel. That is a modern Monroe era snare, probably from the early 2000's judging by the hardware. If it was a bronze shell, there would be a "bz" stamped above the badge, if it was brass, there would be just a "b" stamped above the badge and like others have said, there would be a second badge. What you have there is the standard alloy shell Supraphonic from the early 2000's. Still a great sounding drum, but not worth a ton of $$

Splay. Does a drum no good.

Splay? Come again.

"splay" is when the tension rods come down to the lugs at an angle. Generally any drum will have a bit of an angle there but it seems to be a much greater angle on some drums. This is a common thing on newer Ludwig metal shelled drums. Not really a mechanical issue since the swivel nuts in the lugs compensate but doesn't look as nice as straighter lugs and probably is not the optimal set-up. Some have said that the splay goes away (or lessens) if you use different hoops so it's not necessarily an insurmountable problem.

These drums seem to sound fine with or without splay but it is bothersome to some and Ludwig would probably be smart to try to fix it (although the rubber gaskets under the lugs on their newest drums probably do help somewhat).