My $ would be on stamped construction. These seem to fit in the same manner as VoPo grips, which are also hollow. They should be held secure by the grip screws and also locking in at the top. They don't depend on vertical ribs on the back, as we see on walnut grips.
Who edited the pic by blacking out the medallions? I don't believe we're shy here, and can put up with a swastika or two in proper context.
