A commission showing both the Enterprise C & the Enterprise D from the episode "Yesterday's Enterprise".
Enterprise C - Unknown
Enterprise D - Prologic
This is when the timeline was altered, which changed everything that occurred thereafter!
And it was what eventually brought Denise Crosby back as Sela!!!
Enterprise-C, out with her ugly sister ship.
If memory serves, it's the only time you ever see the Enterprise C. Same thing with the Enterprise B in ST:Generations.
But overall nice work.