Brandon4, so it was in 2003 celebrating with 2003 model year vehicles or it was in 2003 kicking-off the 2004 model year?

My Ford NAA Jubilee tractor has a 50 year anniversary emblem on the grill, 1903-1953

All 1953 Ford Passenger Cars/Trucks had a horn button or horn ring (cars) with a 50th Anniversary emblem (1903/53).

Next to the Piquette Avenue plant stood the former EMF (Everitt-Metzger-Flanders) plant that Studebaker later acquired.

Several years ago, while being rehabbed, an arsonist set it on fire, it burned to the ground, a sorry loss.

But, there's no shortage of former auto assembly plants in Detroit.

Still extant today is the Aerocar plant that was later used by Hudson as their first plant, parts of Hudsons 'newer' plant, 95% of Packards former plant, the Rickenbacker plant, several former Fisher body plants, the Lozier plant, now mostly in ruins, the 'Leland' Lincoln plant, Murray body plant, Gemmer steering plant, Continental engine plant.

There's probably more, but this is all I can recall 'off the cuff.'

Lots of interesting information, all evidence points to 1903...