The number of these found in Britain is comparatively few.
However, there are a few things that can be said about them.
PLAIN LOOP - FIXED PLATE
Fixed openwork plate
These feature the same style of openwork plate as found on the dolphin open loop group. However, in this case, they are fixed to a plain loop (1, 2, 3). Stylistically this group is quite close to some continental examples (4, 5) but judging by the apparently higher proportion of this type in Britain, they may be a British type. From the examples available, distribution seems to be mainly in south and south west England.