
They are weapons, clubs in fact, fashioned by Alaskan natives some time during the 19th century. The top was used to club fish; the bottom was used to club seals. Both were made from the baculum (penis bone) of the male walrus.
In addition to this photo, I have a number of complicated schematic drawings on napkins that illustrate how bacula might be collected in game and worked into any number of useful things like clubs, furniture, and even dishware. Of course, I don't want to bore you with technical details, so I wait until contacted by an interested wizzie to e-mail scans.
In case you were interested a little in the technical drawings, here's a preview I made for you on MSPaint:
