The two double-digit numbers, “16” and “25”, are the IDs of those foremen responsible for the quality control of those items. “01584” is the pattern code. German producers rarely “named” patterns but left that for importers/retailers, hence the confusion nowadays (and in this case) as the producer-given pattern ID differs from whatever name the importer/retailer registered and used in marketing (not only between countries, but even US East / West Coast!).