ROYAL ARK MARINER GRAND RANK APRON
https://www.symbolicregalia.com/shop/ap-rm-001-royal-ark-mariner-grand-rank-apron-29254
https://www.symbolicregalia.com/web/image/product.template/29254/image_1920?unique=5491e6c
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This Royal Ark Mariner Grand Rank Apron is required with the corresponding Grand Rank regalia (linked below).
Internal Reference:
AP-RM-001