N241 - confusion

FloridaMetal

For N241 there is some confusion. Is it a Travel Air 1000 or a Travel Air 4000?

Even Aerial visuals is confused - it says it is based at the EAA museum in Wisconsin but they have a picture of it from the Beech Museum in Tennessee.

https://www.aerialvisuals.ca/AirframeDossier.php?Serial=16340

There are pictures under both profiles of the same aircraft

Helicopterfriend

Found several sites stating it's a 4000, so I deleted the 1000 profile, the aerialvisual I looked at stated it was a 4000 1.

NTSB also called it a 4000, report number CHI73FEP16

Thanks