Your example has a killer (cancel) made up of horizontal lines. The postmark is made up of horizontal lines of text, with city, date, etc. (also called ‘rectilinear’). There are a number of possible manufacturers of this machine. Start the search by answering the following question:
Question: Does the time appear on its own line of the postmark?
Yes, [time on separate line of postmark]
No, [time does not appear or is not on separate line]