Instructions for Fixing Errors on 1990 Donruss Baseball Cards: The Most Valuable Ones

If you’re a collector of baseball cards, you know that errors can make a card more valuable. The 1990 Donruss set is no exception, with several cards that have errors that make them more valuable than their corrected counterparts. However, if you’re not careful, you can damage the card while trying to fix the error. In this article, we’ll give you instructions for fixing errors on 1990 Donruss baseball cards, including the most valuable ones.

Heading 2: What are the most valuable errors on 1990 Donruss baseball cards?

Before we get into how to fix errors on 1990 Donruss baseball cards, let’s take a look at which errors are the most valuable. Here are the top five:

1. Frank Thomas No Name on Front (NNOF) - This error card is missing Thomas’ name on the front, making it one of the most valuable cards in the set. It’s worth around $2,000 in near-mint condition.

2. Frank Thomas Reverse Negative - This error card has the image reversed on the front, making it another valuable card. It’s worth around $1,000 in near-mint condition.

3. Sammy Sosa No Name on Front - This error card is missing Sosa’s name on the front, making it worth around $500 in near-mint condition.

4. Sammy Sosa Reverse Negative - This error card has the image reversed on the front, making it worth around $300 in near-mint condition.

5. Ken Griffey Jr. Reverse Negative - This error card has the image reversed on the front, making it worth around $200 in near-mint condition.

Heading 3: How to fix errors on 1990 Donruss baseball cards

Now that you know which errors are the most valuable, let’s talk about how to fix them. Here are the steps you should follow:

1. Identify the error - Before you can fix the error, you need to know what it is. Look at the card carefully to determine which error it has.

2. Gather your supplies - You’ll need a few things to fix the error, including a magnifying glass, a soft-bristled brush, and a clean, dry cloth.

3. Clean the card - Use the soft-bristled brush to gently remove any dirt or debris from the card. Be careful not to scratch the surface.

4. Use a magnifying glass - Use a magnifying glass to get a closer look at the error. This will help you determine the best way to fix it.

5. Fix the error - Depending on the error, you may need to use a pen or marker to add missing text, or you may need to carefully remove excess ink. Be very careful when making any changes to the card, as even a small mistake can significantly reduce its value.

6. Clean the card again - Once you’ve fixed the error, use a clean, dry cloth to gently wipe the card clean. Be sure to remove any excess ink or debris.

7. Store the card properly - Once the card is clean and the error is fixed, store it in a protective sleeve or holder to prevent any further damage.

Conclusion:

Fixing errors on 1990 Donruss baseball cards can be a delicate process, but it’s worth it if you have a valuable card with an error. By following these instructions, you can fix the error without damaging the card and potentially increase its value. Just remember to be careful and take your time, and you’ll have a valuable addition to your collection in no time.

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