1892 Address unknown: try the police

This example has a gummed label attached; it was posted on 14 July 1892 at 13:50 from Station 50 to Station 63, arriving 14:50. Delivery was impossible; the label says "Adressat Schottenfeldgasse den Parteien und Hausbesorger unbekannt ... Bitte Polizei fragen", ie "The addressee in the Schottenfeld-gasse is unknown to the parties and to the custodian ... Please ask the police" so it was returned: the label was cancelled at Station 63 at 15:30, Telegrafen Centrale 16:00, and Station 50 at 18:30. The card is shown below with the label turned back