Antique Silver Lieutenant Colonel Army Oak Leaf Insignia Pins WWII Memorabilia

I found these in my Great Grandmother’s sewing box MANY years ago.. These are unmarked. Or too worn down to see any hallmarks. Based on the condition & the push stopper on the one, it’s easily WWII. So these would be great for collectors of memorabilia from WWII. 1- Push Pin Type w/ original stopper for its age 2- Pin brooch type style (maybe for the lapel)? The fronts are in great condition for their age. Please see all pics. I can take more by request. Also, I know absolutely zero about these items, so if I’m totally incorrect please let me know. They are very nice. I hope they’ll find a good home. If a person didn’t know they were military, they could just be worn as regular jewelry. ~ Size 1” Bundle with any of my other items to get the best price & shipping!! I ship quickly & items come from a non-smoking home! Reasonable offers considered.