Over the years, PSA grading services have brought a critical and much-needed element to this hobby:

third-party opinions on the conditions of sports cards.

Why is that so important?

I can’t tell you how many times I have seen potential deals come and go because I, as a buyer or seller, could not agree with the other party on a card’s condition and therefore its value...

However, when a card is in a PSA holder (or “slab” as they’re often referred) then the confidence of both the buyer and seller increases dramatically.

Basically, PSA acts as the mediator in determining a card’s condition.

And buyers and sellers are usually more likely to transact as a result.

But, while this is the main idea for why PSA grades cards, there are many other reasons to consider using their services.

Although Randy Johnson rookie cards were printed during an era of extreme market saturation, many of them have held up well in value over time.

As far as pitchers are concerned, they don't get much more dominant and intimidating than Randy Johnson was...

His towering 6'10" frame allowed him to throw his blazing fastball and devastating slider at truly unique angles.

That unique combination of physical skill led to an exciting Hall of Fame pitching career that you just don't see very often.

His dominance on the mound made him one of the most exciting and popular players of his day.

And in this guide, we'll discuss everything you need to know about collecting each of his many different rookie cards.

The 1954 Topps Hank Aaron rookie card is one of the most iconic vintage baseball cards in the hobby.

If there were a Mount Rushmore of baseball cards, many collectors would place this card in that group...

Hank Aaron is nothing short of a legend.

Even Muhammad Ali once said of Aaron, "He's the only man I idolize more than myself."

And that's saying something...

Because of the extreme popularity of Aaron's rookie, prices have steadily risen to a point where it has easily become one of the most valuable baseball cards in the hobby.

And in this guide I cover all of the key things you should know about this legendary baseball card: from its value to its history and collectibility, it's all right here.

Let's jump right in!