Marty Grabstein Autographs
Marty Grabstein is an American actor, best known for voicing the titular character in the Cartoon Network animated series Courage the Cowardly Dog.
Grabstein's career has included work in films, television series, live sketch comedy, theater and commercials. Grabstein’s film credits include Bury The Evidence and Apartment #5C. His television credits include parts on three Law & Order series, Third Watch, and Conviction.
In addition to roles in several theater productions, Grabstein co-wrote and co-starred with Rick Mowat for their sketch comedy act Lab Rats, which they performed in comedy clubs throughout New York City. During the years they performed in that show they regularly arrived with new material.
Read more about Marty Grabstein on Wikipedia
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Current items with a signature of Marty Grabstein
These are the most current items with a signature of Marty Grabstein that were listed on eBay and on other online stores - click here for more items.
Traded items with a signature of Marty Grabstein
The most expensive item with a signature of Marty Grabstein (DC Comics CARTOON NETWORK CARTOON CARTOONS #4 SIGNED AND SKETCH MARTY GRABSTEIN!) was sold in September 2025 for $1,000.00 while the cheapest item (Marty Grabstein Signed Photo Autographed 8x10 Photo) found a new owner for $5.50 in February 2024. The month with the most items sold (6) was November 2025 with an average selling price of $124.97 for an autographed item of Marty Grabstein. Sold items reached their highest average selling price in May 2024 with $400.00 and the month that saw the lowest prices with $5.50 was February 2024. In average, an autographed item from Marty Grabstein is worth $106.90.
Most recently, these items with a signature of Marty Grabstein were sold on eBay - click here for more items.
| Picture | Item Title | Price | Store |
 | Courage The Cowardly Dog Signed Funko Pop By Marty Grabstein 7BAP JSA Coa | $99.99 |  |
 | Marty Grabstein Autographed Courage The Cowardly Dog Poster Authenticated | $69.99 | |
 | Marty Grabstein Autographed Signed 8x10 Photo Print COURAGE The Cowardly Dog | $39.99 | |
| Marty Grabstein Autographed Signed 8x10 Photo Print COURAGE The Cowardly Dog | $39.99 | |
| Marty Grabstein Autographed Signed 8x10 Photo Print COURAGE The Cowardly Dog | $34.99 | |
| Marty Grabstein Autographed Signed 8x10 Photo Print COURAGE The Cowardly Dog | $39.99 | |
| Marty Grabstein Autographed Signed 8x10 Photo Print COURAGE The Cowardly Dog | $44.99 | |
| Marty Grabstein Autographed Signed 8x10 Photo Print COURAGE The Cowardly Dog | $49.99 | |
 | Marty Grabstein Courage the Cowardly Dog 8x10 Signed Photo JSA Certified Auto | $69.90 | |
 | Marty Grabstein Courage The Cowardly Dog Autographed Signed 8x10 Photo COA 17612 | $45.98 | |
 | MARTY GRABSTEIN Signed Autographed COURAGE COWARDLY DOG 8x10 Photo JSA Certified | $94.99 | |
 | MARTY GRABSTEIN Signed COURAGE COWARDLY DOG FLOCKED FUNKO POP EXCLUSIVE JSA COA | $159.98 | |
| Marty Grabstein Signed Courage The Cowardly Dog King Ramses Script copy/SKETCH! | $349.99 | |
| Marty Grabstein Signed Funko POP - Courage the Cowardly Dog (Flocked) - JSA COA | $77.98 | |
| Signed By Marty Grabstein and Jeff Brennan JSA Sketch Courage Cowardly Dog | $193.00 | |
