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1971 Topps #506 Bobby Knoop PSA 7 Auto 9
1971 Topps #506 Bobby Knoop PSA 7 Auto 9 - Image 2

1971 Topps #506 Bobby Knoop PSA 7 Auto 9

1971 Topps #506 Bobby Knoop – PSA 7 Auto 9 – Signed Autograph

A vintage 1971 Topps card featuring infielder Bobby Knoop, graded PSA 7 Near Mint-Mint with a bold Auto 9 signature. The card displays clean edges, sharp corners, and excellent centering, representing a quality example of early-1970s Topps design. Knoop was known for his defensive skills at second base, making this card a meaningful addition for vintage baseball collectors.

  • Year: 1971
  • Set: Topps Baseball
  • Card #: 506
  • Player: Bobby Knoop
  • Grade: PSA 7 (Auto 9)
  • Population: Pop 1 – None Higher

A rare signed vintage Topps card, ideal for collectors seeking high-grade autographs from early-1970s players.

$274.99

1 in stock

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Brent S.
Brent S.
★★★★★
@brentstoys
Working with Dennis at H.O.F. Signed Rookies has been fantastic. He’s highly knowledgeable, always answers my questions, and I’ve already received my signed and slabbed cards. I’m thrilled to have found him and highly recommend his services!
James H.
James H.
★★★★★
@slamdunkcollector
H.O.F. Signed Rookies was a fantastic experience! They helped me land a hard-to-get autograph that turned out amazing. Communication was top-notch, every question answered quickly, and their service earned my full trust. I’ve already sent in more cards for future signings. As a longtime collector, I fully recommend them.
Aaron P.
Aaron P.
★★★★★
@aaronisapayne
Great company to work with! My cards came back graded well above what I was hoping. I'll definitely be sending all my cards here to get prepped for now on. Great communication, great service!
Chris C.
Chris C.
★★★★★
@cart_is_wright
H.O.F. Signed Rookies treated my cards with great care and professionalism, ensuring they were well-protected and arrived in perfect condition. Their expertise, attention to detail, and secure packaging set them apart. I highly recommend them for grading, valuation, or expanding your knowledge of sports card collecting!
John M.
John M.
★★★★★
@packripperjohnni
I highly recommend H.O.F. Signed Rookies for anyone looking to get their cards autographed and graded. Their all-in-one submission service makes the process seamless—just send your card, and they handle the autograph, prep, and grading from start to finish. Their professionalism, expertise, and attention to detail ensure top-quality results, and their communication is always clear and responsive. If you want trusted results without the hassle, HOFSR is the way to go!
Ben P.
Ben P.
★★★★★
Hopkinsville, KY
As a multi-player autograph collector, I wanted someone I could trust with my cards. Finding Dennis at HOFsignedrookies.com has been perfect. The process is smooth, communication is excellent, and my cards are handled with real care and attention. With already-signed star pieces, trust was my biggest concern—and HOF Signed Rookies has exceeded expectations. Great service, great value. Excited to continue working together.
Jake F.
Jake F.
★★★★★
@baseballnerdist
When it comes to sentimental or financially valuable cards, sometimes you need an extra set of eyes and hands to make sure everything’s perfect before grading. H.O.F. Signed Rookies is the place to go. Their communication is excellent, and they do a fantastic job of bringing out the full potential of every card.
Joe M.
Joe M.
★★★★★
@steelers_card_fella
I recently used H.O.F. Signed Rookies for a Steelers signing I couldn’t attend and was thoroughly impressed. Dennis was professional, responsive, and addressed all my detailed questions throughout the process. The team carefully prepped my cards, ensured they were signed in the correct spot, and even submitted them for grading. This white-glove service is exactly what I look for in handling my collection.
Brian R.
Brian R.
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@thebriansays
Hall of Fame Signed Rookies is a collector’s dream! Their selection of sports cards and memorabilia is outstanding, and their card preparation service for grading submissions is top notch. I would highly recommend checking them out!
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Brad C.
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@bradcostilo
Couldn’t be happier with the deal that we worked out! Thank you for the signed Koufax RC, which is a cornerstone piece of my collection!.
Charles J.
Charles J.Aurora, IL
Excellent communication from start to finish. The signing dates don't get postponed. Will continue to order.
Nick B.
Nick B.
★★★★★
Fort Dodge, IA
HOF Signed Rookies did a great job with my item at the Rod Carew signing at a price much cheaper than others were offering. I would absolutely use them again in the future for my items. Very satisfied with my experience. Thank you!
Tom B.
Tom B.
★★★★★
Glendale, AZ
I would highly recommend HOFSR for their professionalism and exceptional customer service in helping me get my Rod Carew bat signed by Mr. Carew. The entire process went smoothly, and I couldn’t be more pleased with the result! You can trust that they will take excellent care of any item you submit for signing. Thank you.