I found these two porcelain pieces while hunting a old phone line built in 1928. I would appreciate any help identifying them. I am not a porcelain collector, so I know almost nothing about them. This phone line followed a 110 KV tower line that was also built in 1928. All of the old suspension insulators were lying underneath the towers from past upgrades. There were some that were a blackish colour with reddish swirls inside. These have a B in a circle and were dated 1918. The others were a much lighter brown colour with a B in a circle and were dated 1917. Do these pieces have any collector value? Thanks Chris S 1-204-687-4576