There is a flag like raised piece of metal protruding near the top of the 6, other letters appear thick with possible notching, clear doubling under chin down neck and other lettering appears thickened. What type of doubling? More pics in first post.
What you are seeing on the 6 is a die chip. The "doubling" you are seeing on the date and neck is MD. I don't see any thickness that would indicate a Class VI. The thickness that I do see is from circulation contact.