Thanks Jerry, That is the first time I have ever seen the box that the jack came in and it may be the only one in existence. That is a 6:50x15 inch tire size that you see and not many of those have survived either. An insert page in some of the owners manuals says "All Kaiser and Frazer cars after the following serial numbers, Frazer F485-001001, F486-001001. Kaiser K-481-012520. K482-001256 are equipped with the new 7:10x15 low pressure tires...... There were apparently several different Jacks used in the early years and that would be an interesting study. 11/1/46 parts book says part #200935, 11/1/47 book says #202898 and the same number in the 4/48 parts book. none of these are the same number as on the box in the illustration.