Kato N gauge 101 series (Chuo-Sobu Line)
Model produced in 2006; purchased second-hand in good condition but very noisy runner; fixed by oiling motor bearings.
Three cars have evidently been modified with Kato Roundhouse parts kit 11-510 (image link) which contains replacement roof parts and AU75 air conditioning units, here SaHa 101-233:
The original model is based on 1978 condition with no air conditioning; it's not clear when this was added.
One of the cab cars, KuMoHa 101-155, was based at Tsudanuma Depot between 1967 and 1982, before being transferred to Hineno Depot in Osaka (see: 国鉄 クモハ101-155).
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