No data, natural amber is colored glass. The 3157A has such a cheap coating that peels off. I bought 2 of these from amazon.com and both were made in the USA. The bulb that came with my Corolla lasted 13 years and they are all Sylvania. Unfortunately, Toyota lowered the price and got the 3157A, which was superseded, but both were still working when I replaced them. I've had great luck with Sylvania bulbs, I hope the quality is the same. They arrived via Prime and were packaged very well, the Amazon feature that tells you you have the right part is very nice.
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