The capitals MDCIII correspond to 1603, the year of Queen Elizabeth I's death.
1. The record produced by a chronograph.
2. An inscribed phrase in which certain letters can be read as Roman numerals indicating a specific date.
chron′o·gram·mat′ic (-grə-măt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.