Old Silver Spoon – need more info about it

Hi all,

My grandmother was given a very old silver spoon by a noble englishman in 1971. She passed away recently and I inherited this spoon from her. Below are the photos of this spoon:

http://img194.imageshack.us/img194/5264/5hsn.jpg
http://img89.imageshack.us/img89/968/7wvi.jpg
http://img33.imageshack.us/img33/1034/0hyl.jpg
http://img703.imageshack.us/img703/1424/zs7s.jpg
http://img802.imageshack.us/img802/8108/f2sj.jpg
http://img855.imageshack.us/img855/6466/nxwg.jpg

It is made of solid silver and was told it costs a fortune. Can someone give me more info about the markings and from which period it might be originating?

Thanks