Can you post some close up shots of the wheels? There's a pretty simple way to identify the RH-5 wheels- - - -they have a flat area about 2" wide where the two halves of the wheel join together. They're called "widowmakers" for good reason- - - -the lip that engages to lock the wheel halves together is tiny, and very subject to damage from rust or ham-handed assembly methods. The more conventional design sectional wheels with a removable bead ring are perfectly safe to use as long as they're not damaged or badly rusted.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!