Welcome to SpenceLOA.com!

JSA is the foremost autograph authentication service in the world! 

Enhance the value of your signed collectibles with a JSA Letter of Authenticity!

We now operate our authentication service in two convenient locations:

Parsippany, NJ & Fort Lauderdale, FL




Take advantage of our office visit service and schedule an appointment now! 

Please contact either office to connect with a JSA representative for more information:

New Jersey Location

2 Sylvan Way - Suite 102

Parsippany, NJ 07054

JSA-NJ: 973-898-1300

JSA-NJ: Info@SpenceLOA.com



Florida Location

3223 N.W. 10th Terrace, Suite 604

Fort Lauderdale, FL 33309

JSA-FL: 954-380-8670

JSA-FL: Florida@SpenceLOA.com


We look forward to authenticating your autographed memorabilia!

Search JSA Events
Event Month:
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Collector's Corner 3 Day Super Show
O'Fallon    Illinois

GTSM Houston Show
Houston    Texas

Dugout Zone
Ellicott City    Maryland
View all
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