What coin grading company is this? It has a B in the bottom left corner

Cant seemcto find this grading company, its probally a fake grading.[ATTACH]

Understanding Coin Grading And What It All Means - The Patriotic Mint Coins

Lincoln cent - Wikipedia

Rare 2022 Quarter Errors Worth Money (with Pictures)

1971 Kennedy Half Dollar Value

Learn Grading: What Are the SP and PL Prefixes?

Learn Grading: What Are the SP and PL Prefixes?

7 valuable pennies worth up to $200,000 might be in your pocket

Most Valuable Lincoln Wheat Pennies (Keys & Varieties)

/.image/t_share/MTk5NTAwMjM4

Why Your Wisconsin Quarter Could Be Worth a Lot More Than You Think

Selling Slabbed Coins Certified by Off-Brand Grading Services - American Rarities

Susan B. Anthony Dollar (1979-1999) : History & Value