I have some additional thoughts... If you're gonna shoot it... I would call The DarkRoom in Oceanside, Ca. They're a big, old time film developing company... And ask to speak to their techs... Then I'd tell them exactly what you have, and can they give you any tips. There are formulas for determining different aspects of that film... they can determine from the age, how much to push/pull the developing and can offer tips on what ASA/ISO to use and how much to either over or under expose that film to get the best results...
Cindy, that is a medium-format film. 620 is the same width of the far more common 120 film, but the spool is physically smaller and the take-up notch in the center is not exactly the same.
Kodak made many Brownies and other types of cameras in the 620 format. I had one that came from a rummage sale as a child. Here is a photo I found online of the same model. Believe it or not in the 1970's you could still buy boxes of a dozen of those 1-use flash bulbs for the camera.
My Dad had a Kodak Pocket 620 camera that I inherited. I have it displayed with some other obsolete camera gear in an entertainment center. I would love to have a roll of that film to display with the camera. Maybe I'll get lucky one day and come across a few rolls in someone's house like you did. Good find! No matter what you decide to do with that film, it can't be a wrong decision. It's your's to do with as you please, and thanks for posting and giving me a blast from the past............the darn film is 3 years younger than I am. LOL