DEKALB Seed Dealer sign

I found this DEKALB Seed Dealer sign in a neat little antiques place in Ripley, Mississippi a few years ago for next to nothing. It’s not terribly old but had a good look and appealed to me with its simplicity. Having grown up on a farm, feed and seed pieces are nostalgic and interesting. DEKALB is a venerable brand which is still in business. If anyone knows the age of this particular sign, I would appreciate the information.