SR style seat (which is good), mostly cosmetic restyle and a bolted Smith-style flange joint for field repair. Not sure why operators would spend much if any time looking at the regulator after setup but if so the full-sized gauges on the SR could have gotten the pretty colored bands. If Victor cares about field service how about reasonably priced torch and regulator service tools especially HEAD REAMERS??? Machining is not rocket surgery.
I HATE those regulators and everything about them which is why when I got my journeyman outfit I tossed them right in the trash can I was raised on the SR series and still use them and I've been using Oxyacetylene for 30 years so I know what I like.