They are both dated 2505 in the Buddhist calendar used in Thailand, a date which converts to AD 1962. However, this is not necessarily the year it was struck. For much of the 20th century, Thailand put "frozen dates" on the coins. That means, they did not change the date every year, but issued coins with the same "Date" numerals over multiple years. Specifically, this is a 1 baht coin, and 1 baht coins dated 2505 were struck from 1962 right through to 1982. There is no way to tell precisely what year within that range your specific coin was struck.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis