I recently obtained a new to me Wagner Wafer iron variation.  I think it is late production.  It has a stylized, big W logo with the number 1451 on it.  First I've seen (thanks Amy  ;)).  You normally find this with a 1450 number.
If you have any of these late, big W irons, would you let me know if you have the 1451 marking?  I don't care about any other numbers unless it is NOT 1450 or 1451. ;D
The 1451 was listed in the 1941 catalog, the irons were completely discontinued in 1942.
A couple months ago I thought the wafer iron article was done.  Now a couple more pages.  Will be up near 40 now.
Tom