I emailed Florsheim and a kind gentleman told me how to date Florsheim shoes. Example of Inside marking; 81/2 D 614745 11 93602 IE. br> IE portion shows the month and the year of manufacture. " That code was applied at a factory of which we no longer use to produce the shoes....so the code is no longer in use. Also, with that being said, it was during a limited time that we produced the shoes at that factory. However, the rule in place with that code was that the first letter (in this case the "I") referred to the month it was produced. "A" would equal January, so your "I" equals September. The second letter in that code equals the year....."A" would be 0, and your "E" would be "5". Knowing that we only used that factory during the late 70's and most of the 80's, we were able to pinpoint it to 1985. Again, that is when the leathers were produced, and before they were completed and left the factory to be shipped here. When they were purchased is not verifiable by us."