Evil-Einstein , welcome to DFS. This is a great group of folks. I'm certainly not a straight razor historian, though will give this my best shot.
Back in the day, there were thousands and thousands of straight razor manufacturers. On top of that, there were a lot of private label razors. For example, C. Clark could be a hardware store.
The most interesting thing to me is that it is marked 'insured'. I've never seen that before. I see 'warranted' or 'guaranteed', but not insured. This makes me wonder if it is really old, from a time when 'insured' mean something different from today.
I have an old civil era war gun that has three notches carved in the stock. I'll never know the true story. I like to think that it was a man marking the birth of his daughters and not from people he killed.
My best guess, which is just that - a guess, is that the razor isn't particularly valuable from a monetary viewpoint, though that doesn't mean it isn't a great find and shaver.
The top of the blade is called the spine. I can't tell from the picture, though if the flat looking area at the top of the blade is flat, then it has been honed incorrectly for far too long.
Tell us a little more and we may be able to help more. Are you new to straight razors and wanting to give it a try? Is that razor a family heirloom? etc...