Winston S Churchill Secretarial Aignature ????

A very nice signature, alas probably signed by a sectretary or possibly an autopen machine, i'm really not sure after taking advice on this one from someone with better knowledge. The problem is the "W" separate from the "i" as none of his signature's seem to have ? Another point is i have studied autopen machine signatures from his office but can't match it up with this signature ?. Still a very nice vintage signature probably from someone very close to the great man. Very reasonably priced as well even for a secretarial.