Butter picks are very common on fine silver sets. Love them because lots of people don't know what they are! The interesting thing is that not all butter picks are old...even if the pattern has been produced for a very, very, very long time. You can go to Replacements LTD and for popular patterns they will make one for you! The one you are displaying is a one tine butter pick.
Butter Servers 101 Class:
The uninformed believe that the purpose was so that you could pick up a pat of butter. But, au contrare.....picks were made to pick up butter curls - one curl at a time without breaking it or dropping it! (The twists are a few large spirals.) Then the revised butter pick which is better used for picking up butter pats has tighter spirals, like a screw. BUT, the two tine butter pick (that looks like a fork) was designed to pick up a pat of butter from the butter server to place on the bread plate. Then...to go further.....you have a master butter knife, a individual butter knife and a butter spreader.
The wooden handled pot is a sauce pot.