SGC  offers the best all around value for the grading of Pre 1980 Baseball Cards they are reasonably priced for their service, and also command the highest prices paid when time comes to sell your cards. They also don't do alot of shameless and biased self promoting like  BGS or PSA do. So you know that when you send in your cards to be graded you can be 100%  sure  you are  without question getting a complete, thorough and unbiased true  independent 3rd. party opinion. They have the all around approval from the top collectors in the nation. They also carry their own unique grading scale  of  10 - 80 by tens, and from there it goes  84, 86, 88, 92, 96, 98, 100. Thus ensuring the most accurate grade possible.