XII-XXVI-NN is correct (nulla nulla, as there is no numeral for zero), but if the "00" represents the year 2000, I'd go with MM. XII XXVI MM
Just my $.02
XII-XXVI-LXXXIX
XXVI is the number 26 in Roman numerals.
November 26, 1997 in Roman numerals is XXVI.XI.MCMXCVII.
26 = XXVI
26 as a Roman numeral is equivalent to XXVI
XII-XXVI-LXXXIX
XXVI is the number 26 in Roman numerals.
November 26, 1997 in Roman numerals is XXVI.XI.MCMXCVII.
26 = XXVI
XXVI
XXVI
26 as a Roman numeral is equivalent to XXVI
The date 26-08-1984 written in Roman numerals is XXVI.VIII.MCMLXXXIV
The Roman numerals for November 26, 2010, are XXVI XI MMX.
In today's notation of Roman numerals: II-XXVI-MCMLXXXVI
XXVI
XXVl