The Czech Death Car is probably the oldest dating back to 2002, but I completely rebuilt it about two years ago, so if you don't want to count that then the Venus is the oldest MOC I have. It got renovated like 3 or 4 times until its present incarnation, but it is the oldest MOC where most of the main superstructure has remained unchanged, dating back to 2006.
"Each night alone I dream, that I'm a rebel Roller Queen‼
I'll be a star that shines, I can make the whole world mine‼"
Overwatch died. Post this in your profile if you miss Overwatch.