Curious how/who noticed the font detail and knew enough that it could help date the document. However, couldn't the machine identification code from the printer reveal exactly when the document was printed?
Another example: IMDB has a goof documented for the Bourne Supremacy wherein the fluorescent lamp is humming at 60Hz, instead of the 50Hz appropriate for Goa, India: https://twitter.com/deeaen/status/961369721571627009