Martin of Tours in the 14th century and has a number of unique architectural features. St. Martin is the patron saint of the Polish towns of Bydgoszcz and Opatów. His day is celebrated with a procession and festivities in the city of Poznań, where the main street ("Święty Marcin") is named for him, after a 13th-century church in his honor. A special type of crescent cake "(rogal świętomarciński)" is baked for the occasion. As November 11 is also Polish Independence Day, it is a public holiday. In Latin America, St. Martin has a strong popular following and is frequently referred to as San
Key date Key date In coin collecting, a key date refers to a date (or date and mint mark combination) of a given coin series or set that is harder to obtain than other dates in the series. The next level of difficult to obtain coins in series are often referred to as semi-key dates or simply semi-keys. For example, the 1909-S VDB is the key date in the Lincoln cent series. The 1914-D and 1931-S are considered semi-keys. In the United Kingdom £1 coins from 1988 are considered key date coins. What makes a coin a "key" is somewhat more complicated