【Model Train】MICRO ACE E491 Series 3-Car Set EAST i E

This is a used item, but it is a very rare train set.
A niche inspection car.
If you are interested, please consider it.
Overview↓
[Vehicle] The entire set is dusty. It was purchased new over 10 years ago, and was displayed as a collection at home, hence the dust. It has been stored in its case for the past few years. There is no sun fading or odor.
If you clean the dust off the drive wheels of the powered car (M car), I believe it will run smoothly.
Both the headlights and taillights are in good working order.
[Accessories] The instruction manual is included. The included couplers were unopened. One pantograph on the leading car is missing. Other than that, the pantographs on the other cars operate without issue.
[Usage History] When first purchased over 10 years ago, it was frequently run at rental layouts. It was mostly displayed as a collection, but has been stored in its case recently.
[Case] The book case has some minor scratches. The outer box is in good condition considering how long I've owned it.
The protective film for the vehicles is still present.

I would prefer to sell this to someone knowledgeable about model trains if possible.
The price includes shipping.