Unidentified Marine Diesel Flexible Drive Coupling / Pump Drive Hub - New Old Stock

New old stock machined flexible drive coupling / pump drive hub with six rubber-isolated mounting lugs and a keyed center bore, sealed in original poly bag. Application appears to be a marine diesel accessory or injection pump drive coupling, but no brand or part number is visible on the part. Condition: new old stock (unused, bagged, light surface bloom on the bore only). Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase.