The Dutch branch initially used a white flag with a green bend and a diamond carrying black APC. As Standard Amerikaansche Petroleum it adopted an Esso-related version with red SAPC vertically at the hoist. Further changes followed the Petroleum Industrie Maatschappij and Esso Tankvaart names. The sources disagree on chronology and naming; the original P61 reference is retained for comparison.
Keep the explicit scope label independent; no alias or company identity is inferred.