Image from Geograph.org.uk is by David Wright
Clock face after recent restoration.
Image from Geograph.org.uk is by George Robinson
Image from Panoramio is by bitofluff
(Click on the image to see clock face in the enlarged image.)
The church is about 800 year old and the clock was installed in 1919 to mark the end of WW-1 (IN TERRA PAX - Peace on Earth). No one is sure about the reason for discrepancy in the clock numeral. There are many theories;
Source of info: Wikipedia
Credits: Thanks to wtwjgc who brought this to my knowledge through this post.