All About Pocket Knives

What can you tell me about these two Hammer Brand knives? I'm curious to know how old they may be and if they have any value.

The little one with the bail measures 2" closed. Both blades have half stops and have good snap.

The larger knife measures 3 1/8" closed. The clip has no snap but the pen has good snap and a half stop.

Thanks for your help.

These were made for a long time, by Imperial. Could be from the 40s, 50s and even possibly the early 1960s.