Assertion: anglo concertina | /r/HasProperty | produced after maccann
Facets:
Source sentences:
text: Other well-known makes of concertina to look out for include Scholer, an East German make of Anglo concertina produced after the Second World War and MacCann, whose Duet concertinas were popular between the 1880s and 1930s; and Hayden, a modern maker of the Duet system.