| Title | 521st Air Mobility Operations Group multi-unit AMS ring coin (721 / 725 / 728 series) |
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| Unit / org | 521st Air Mobility Operations Group (multi-unit AMS/APS ring) |
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| Branch | US Air Force |
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| Category | USAFE / Ramstein air mobility |
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| ID confidence | medium |
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| Visible text (obverse) | 521AMOG | AMO | 721 | 728AMS | APS | -725 | AMS | 121: | AP | 121 AMOG | 129 | AM | 121 |
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| Visible text (reverse) | SERGEANT | 721 | SERGEAN | SERGE |
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| Obverse | Ring of subordinate AMS/APS designations around center; OCR reads 521 AMOG and several 72x AMS/APS marks. |
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| Reverse | SERGEANT with 721 (OCR). Likely NCO/presentation side. |
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| Notes | OCR on both faces. 521 AMOG is at Ramstein and parents aerial port / AMS units including 721 APS. Exact die variant not confirmed from photo alone. |
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| Sources | https://www.521amow.af.mil/About-Us/Fact-Sheets/Factsheet-Article-View/Article/3036125/721st-aerial-port-squadron/ |
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