Image of Colosseum gate 44. With the inscription XLIIII manually circled and then written out below manually for readablity.

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   Velocipede Rider (ruari@velocipederider.com)'s status on Wednesday, 30-Jul-2025 06:11:57 JST Velocipede Rider

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   Early Roman numerals often used additive notation (e.g. IIII or VIIII) before subtractive forms like IV and IX became the "modern standard". Both are valid. Indeed the two conventions sometimes even get used together (and not just on clock faces), often in the same text or even sometimes in the same numeral. On the numbered gates to the Colosseum for example, the additive notation IIII is used but subtractive notation is used for XL (40). Thus you get gate 44 labelled as XLIIII.