Here is quite a bold group of signatures said to have been signed in West Ealing after a day of filming for A Hard Day's Night. This would date them to around April 1964.
I own a set signed two months earlier. While there are many similarities the April 64 set seems a touch odd to me, particularly Paul and John. The Paul seems to lack some detail in the surname and the P-a link in the first name looks odd too. The Lennon looks at bit loose and the "e" looks unusual for this time.
I can understand the April 64 signatures being looser than my Feb 64 ones as the former were supposedly signed outside and the latter in a seated signing session indoors.
I would quite like the April 64 set to be "likely genuine" as I actually find it quite attractive, even though the separate page signatures are obviously not so commercially appealing.