UP 4-6-6-4 Challenger by Key.
Was looking for a Tenshodo FP grey challenger but found this Key model instead.
It has to be the most detailed engine that I've ever owned, or seen in HO scale.
1. Coast drive.
2. directional headlight/tender light.
3. moveable pilot coupler.
4. Functioning sand and access hatches on both sand domes with detailed interior.
5. Functioning access hatches in front of cab roof with detailed interior.
6. Functioning cab roof hatch.
7. see through walk boards.
8. Functioning doors on back of cab.
9. Cab deck plate.
10. functioning water hatches on the tender.
11. Tons of detail piping and running gear.
12. full cab detail
13. FP grey with yellow stripes.