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In the sense of being the primary export multirole fighter for NATO and Western-aligned countries. POD 1979, when the Mirage 50 first flew. Bonus for 15+ countries, Double Bonus if it becomes navalized. Triple Bonus if it remains in frontline service in 7-8 countries to the present day.
Ultimate Bonus: Two countries operating them go to war and Mirage 50s rack up kills on their enemy counterparts.