'Barn' finds and thrift store bargains.

rivetmaster

Member (SA)
NIcely done! The handle's plastic has anti-flammable brominates that break down over time. This video at the 16:15 mark (link) demonstrates the process. There are variations (search the term "retrobrite") but this way is good because it evenly covers the part in water and only needs hydrogen peroxide and some sunlight. Summer is a great time of year to do this because you get stronger light.
Quick update.

I've used this...>

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And the handle before...>

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And after....>

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rivetmaster

Member (SA)
Wow! That Chemipro Oxi worked very well on that handle! 8-)
Only after a few trials.

Simply leaving the parts in a solution of the stuff didn't do much. I found I had to wet the surface I wanted to treat, then sprinkle the powder on it evenly.

The scary bit was when they came out almost white . They've gained a bit of colour back now.