Vintage 50s Silver Tone Square CUFFLINKS signed Pioneer Art Deco Old Money Class

These cufflinks have been sitting in a drawer for many years. My husband does not use them, they belonged to his dad (who rarely wore them-my husband does not remember ever seeing him wear them). So, there is no sentimental value with them. We are clearing out the clutter. Please see the pictures for details. They measure a little more than 1/2 inch squared. They have Pat. Pend. Pioneer on them. Thank you for looking.