No, can't say I have. But John from time to time did add some funny touches to his signature.
Thanks for replying: I've checked against some other 'authentic' Lennon signatures and I now agree with you - they do look like John's :-)
Looks OK....as Spaceman said...Lennon would do different things to his signature over the years...
Lennon's dots are unusual but this looks fine.
These are likely pre-prints.
The photo set is definitely a pre-print.
The dots are odd, but I like the set too.
I nice set.