It did sound a little funny after i read it againYour title for this post sounds possibly, positively painful
In your pics, the odd one out is likely to be an early pneumatic tyre/tire valve cover.
The other two, hard to say. When you photograph objects like these, use a darkish background, Plenty of light, natural if possible, a steady hand, or use a cheap tripod and the picture delay timer thingamajig.
In your pics I can pretty much only see silhouettes of what you are trying to show.
Cheers, Mike