I don&#039;t know the exact year but I know it is prior to 49. I owned a 49 that had the IXB-3 engine that was a later engine. You might want to go to <!-- w --><a class="postlink" href="http://www.cletrac.org">www.cletrac.org</a><!-- w --> or phone Landis Zimmerman at 717-738-2573. Both can identify.