I would just google the name and number and value. It will let you pick below and choose gocollect.com. it will show a picture of the front cover and then look at the grades. The grades are subjective. Cgc is the best and most recommended, but the waiting list to grade can take 6 months. Even if a comic looks new might grade and 8.0 or 9.0. If comic is well read and in rough shape may only grade and 1.0 or 2.0 and if decent shape with only few minor stress in binding might grade a 5.0 to 7.0. If you're fathers collection is in early 1960's could be valuable and Avengers and Spiderman good comics to check first, and if any number 1 thru 10 on them great value. Hope this helps, my rule of thumb is don't send to CGC unless you think it is worth 100.00 or more.