Silver sugar tongs - can you help identify - A&D

[Tongtwister]

Hi - can you help identify these tongs. I cannot find a reference to the maker or the strange "hour-glass" mark anywhere.

Thanks


http://www.silversugartongs.com/tongs%20hallmark.JPG
http://www.silversugartongs.com/tongs.JPG

[Neruda]

Your tongs are by Charles James Allen & Sidney Darwin of Sheffield - silverplate, probably late 19th or early 20th century

[Tongtwister]

Thanks very much, I was beginning to despair of ever finding out what they are.

Regards