By Kirk Miller Time to buy a new watch because it’s … spring? Whatever your made-up reason, today is a good day to grab a new ticker, and the smartest way to upgrade is via the latest sale at Timex. Right now it’s 15% off when you spend $49 or more on select items from the brand’s official website, and then 25% off if you spend $99 or more. And the great news is that these are good-looking and durable watches that have a history of fair pricing. When the Timex watch debuted in 1950 (from the then-monikered U.S. Time Company), jewelers wouldn’t carry the timepiece because of its low 50 percent …