Mainz railcar 501
Exhibited in a museumThe history of the tram
Mainzer Mobilität
Operational
1917: Delivered as Mainz railcar 501, manufacturer Gastell/Siemens/Trelenberg, type Trelenberg/Gastell/Siemens, series 61-68, length 9.19 m, manufactured 1962.
Mainzer Mobilität
Operational
1962: Rebuilt to Mainz service vehicle 68 (ex Mainz railcar 501), manufacturer Gastell/Siemens/Trelenberg, type Trelenberg/Gastell/Siemens, series 61-68, length 9.19 m, manufactured 1962.

1966.
Hanover Tramway Museum (HSM)
Open regularly
1973: Arrived at a museum as Hannover service vehicle 68 (ex Mainz railcar 501), manufacturer Gastell/Siemens/Trelenberg, type Trelenberg/Gastell/Siemens, series 61-68, length 9.19 m, manufactured 1962.