If you remove the spaces in "XXV XXV XIII XIV," you get . This string is grammatically incorrect in standard Roman numeral formatting because you cannot have a "V" followed directly by another "X" without a subtraction context. Roman numerals follow strict order (largest to smallest, with subtractive pairs).
In the café’s logbook, a row of neat entries from 1925 caught her eye: two separate events on the 25th—one a small loan repaid, another a letter received for a local family. A photograph tacked to the notice board showed two young women, arms thrown around each other, dated 1913 and 1914 in the corner. The coincidence tightened the thread between the numbers and something human: lives lived in small increments, documented in whatever way people had at hand. Xxv Xxv Xiii Xiv Roman Numerals Translation - Google