John Mark Galecki (born April 30, 1975) is an American actor. He played Leonard Hofstadter in the CBS sitcom The Big Bang Theory (2007–2019) for which he received a Primetime Emmy Award nomination, and David Healy in the ABC sitcoms Roseanne (1992–1997; 2018) and The Conners (2018–2019). Galecki also appeared in the films Prancer (1989), National Lampoon's Christmas Vacation (1989), Suicide Kings (1997), I Know What You Did Last Summer (1997), Bookies (2003), In Time (2011), and Rings (2017). More about Johnny Galecki
Affiliate disclosure: When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.These are the most current items with a signature of Johnny Galecki that were listed on eBay and on other online stores - click here for more items.
In total, we tracked 204 items since 01/01/2008. The chart below shows the trade volume over time.
The most expensive item with a signature of Johnny Galecki (Johnny Galecki 2012 The Big Bang Theory Seasons 1 and 2 Autograph Card #A1) was sold in April 2023 for $799.99 while the cheapest item (Autographed Johnny Galecki signed 8 x 10 photo Really Nice) found a new owner for $0.99 in March 2020. The month with the most items sold (10) was February 2022 with an average selling price of $15.44 for an autographed item of Johnny Galecki. Sold items reached their highest average selling price in June 2019 with $102.49 and the month that saw the lowest prices with $0.99 was March 2020. In average, an autographed item from Johnny Galecki is worth $18.16.
Most recently, these items with a signature of Johnny Galecki were sold on eBay - click here for more items.
Item Title | Price | Store | |
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![]() | Actor Johnny Galecki Signed 8x10 w/PSA COA Photo Picture Autograph | $23.50 | ![]() |
![]() | Autographed Johnny Galecki & Kaley Cuoco signed 8x10 photo Big Bang Theory | $19.99 | ![]() |
![]() | Johnny Galecki & Jim Parsons Autographed Signed 8x10 Photo with COA | $34.99 | ![]() |
![]() | JOHNNY GALECKI - Leonard Hofstadter-The Big Bang Theory - Autograph Trading Card | $9.99 | ![]() |
![]() | Johnny Galecki Autographed Signed 8x10 Photo BAS COA | $33.88 | ![]() |
![]() | Johnny Galecki The Big Bang Theory Authentic Signed 11x14 Photo PSA/DNA #U59306 | $74.99 | ![]() |
![]() | Signed Johnny Galecki Kaley Cuoco & Parsons 8x10 photo Big Bang | $9.99 | ![]() |
![]() | Signed Johnny Galecki Kaley Cuoco & Parsons 8x10 photo Big Bang Theory Nice | $9.99 | ![]() |
![]() | Signed Johnny Galecki Kaley Cuoco & Parsons 8x10 photo The Big Bang Theory Nice | $19.99 | ![]() |
![]() | THE BIG BANG christmas vacation JOHNNY GALECKI signed AUTOGRAPH 8467 | $6.50 | ![]() |