Stem bands... The '67 OTC trapper I'm working on also has ?aluminum ?other steel color alloy instead of brass for the stem bands. Can't be steel, as it's not rusted. Did OTC change metal type for stem bands from time to time? There was a bit of an 'orangish' sheen on the outside in places, but I figured this was just old varnish wearing off and not a brass-like coating. The metal is quite bendable.