I was given a second-hand Graco car seat and I want to find out how old it is and if it's not too old, how to install it. There was no manual with it and I'm not sure how to tell what model it is. I found the number LAPC0197A on the sticker on the side, but haven't been able to find a corresponding model. How can I find the model number? Once I know the model number, is there somewhere that I can find out whether or not it is still new enough to use safely?