Who made this stein? Using available original manufacturers catalogs, this page allows you to look up possible answers to that question. Mold numbers beginning with 1 and ranging into the thousands appear in the first column below. For each mold number, the manufacturers who produced an item with that number are listed, along with a link to an original catalog page showing that item. Scroll down to the mold number in question, then examine the catalog pages to confirm the manufacturer of your stein.
Keep in mind that these are scans of very old documents, sometimes second or third generation scans. In many cases it is difficult to distinguish the numbers from one another, especially in the case of 3s and 5s. If you find errors of any type, please advise the webmaster.