Very similar to Brian's here -
https://www.flickr.com/photos/abasma...7625826379323/
Very similar to Brian's here -
https://www.flickr.com/photos/abasma...7625826379323/
So that's the second version. This fits in with the majority of the serial number data trend.
It seems that only serial numbers 4047 and 4549 are anomalous, having the old style guard, while others with serial numbers either side of these have the second style guard. Maybe Accles and Shelvoke ran out of the second style trigger guard for a short period and used some of the old ones they had lying around. It would be nice to know if any others in the serial number range 4047-4549 also had the old style guard.
When I say similar to Brian's, only in shape, not condition.
http://i1109.photobucket.com/albums/...psbjmuzeez.jpg
http://i1109.photobucket.com/albums/...psgibbmn7z.jpg
http://i1109.photobucket.com/albums/...psda38xzps.jpg