I looked through many of the sigs, his varied a bit at times, I did see 2-3 with the extra loop at bottom of "J" but they are scarce. The lack of an "n" might be because he was hurried? Ive done that with my own sigs before
The "ch" on yours is also slightly unusual but I did see some.
On a positive note....The speed that the sig was written looks good and I always say a forger usually doesnt try to fake on something with good value,.... they like to sign balls, 3X5, and cheaper photos.
here is one with that "J"
