In regard to the above statement on the 1 looking like an I and the 7 I’m going to post a 71 hemi super bee block for reference with that same font. Also there are several cases where the factory hand stamped the vin on a block, and the gang stamp was not used I assume not to stall production when an issue came up. When you get into studying vin stamping several things make a difference, such as assembly plant, time frame of the build, ext. I have even seen some vins be stamp totally above the machine surface, into the raw casting area.
Matt
The comments on the Bat site State Dave Wise addressed this and states it’s a legit stamp. I worked on a Kenworth line for a few years and there were certainly times when SOP was deviated.
