Actually, I dont know what they mean...my early morning eyes dont see any difference between the 66 and 67 when I look at them both.
Shield nickel Design Hubs - Reverse Hubs
Reverse hubs are differentiated by checking the relative positions of the stars to the lettering. In the case of reverse hubs Ip and I, the rays between the stars are immediately recognizable.
Try this: http://www.shieldnickels.net/hubs/reverseHubs.html
Reverse Hub Ip
Used only for 1866 Proofs. Stars point to midpoint of A (STATES), to the space between AM (AMERICA), and to the left foot of R (AMERICA). The center dot is also diagnostic for this hub.
Shield nickel Design Hubs - Reverse Hubs
Reverse hubs are differentiated by checking the relative positions of the stars to the lettering. In the case of reverse hubs Ip and I, the rays between the stars are immediately recognizable.
Try this: http://www.shieldnickels.net/hubs/reverseHubs.html
Reverse Hub Ip
Used only for 1866 Proofs. Stars point to midpoint of A (STATES), to the space between AM (AMERICA), and to the left foot of R (AMERICA). The center dot is also diagnostic for this hub.



















