A bright idea for a collectors

My dad and I collect metal flashlights. We have 13. We started collecting them because my dad is an electrician and we wanted to collect.

One day the lightbulb went on. The most interesting flashlight we have is about 3 inches tall. It has red stripes on it and is made of all metal. We like it the best because of its size and condition. The weirdest flashlight we found is about 7 inches tall and made of what feels to be aluminum. We are not sure which of the flashlights retails for the most because we find most of them at garage sales.