Otwell Manifold Heater Value?

[Bill Lee/Virginia]

This weekend my car club is having an auction with all proceeds going to the Model A Museum. Among the items I am donating is a serviceable, sandblasted and painted Model A Otwell Manifold Heater; however, I do not know it's value. What minimum bid would you place on the heater?
Thanks.
Bill Lee/Virginia Peninsula

 

[Mitch]

Since it's donated, probably nothing. Just let someone buy it. If it's important $25. I have one you can have it you want.