I disagree.
Rich Melvin will not be with us forever (I know a surprise, even to him)
Some day when Rich, myself and others are long gone, the model of this locomotive with the signature of the fellow operated it and had a intimate relationship with it will have some value.
Other signatures I value would be Steve Winicker, Chief Mechanical Officer.
He knows every nut, bolt on the 765...literally a rivet counter.
Are they others signatures that are important..yes, there most definitely are.
But these two signatures that I, Bryan Smith, value because my relationship with these two professionals.
Some day, to someone like me and people with a like mindset, these signatures will bring a personal connection to these models and that value will be priceless.