What-is-it? Please help Identiy

[sch0enne]

Hello,

I found this when I was in grade 5 or 6 walking through a field at school. Nobody ever claimed it and I have had it lying around for years. I have tried to identify the marks online but havent had any luck. Any help telling me what it is, when it is from ect would be great!

[agphile]

From left to right: maker's mark (I'm afraid I don't know whose), Rose for Shefield, date letter for 1977 and Queen's head because 1977 was her Silver Jubilee year. A small silver bar for use as a pendant with the hallmarks as decoration.

[agphile]

Sorry. In haste missed out the lion passant for sterling silver.