W.H. Gunlocke swivel chair

Hello everyone! I have a W.H. Gunlocke swivel chair. It has no tags to identify the era that it was made. Instead, it has the company name branded on the bottom. On the bottom of the front rim, the number 798 is branded into it. Gunlocke has no idea when it was made so I'm guessing the very early part of the 20th century. Any help or insight would be greatly appreciated! Thank you!