Hi all, Have an original Fisher 400 cabinet in quite good condition, it seems almost a teak finish though perhaps also walnut? See the pictures attached. Wondering if anyone has any tips on keeping the cabinet looking its best as I really love the way it looks and want to ensure I'm doing all I can to keep it protected and healthy? Perhaps some sort of natural oil to protect and retain the quality, though wouldn't want to apply anything that would alter or drastically change the look/add a sheen, rather just protect and preserve. All tips/experience appreciated!