I have seen the "large football" duplex cancel in the past, but usually it has horizontal killer bars, rather than vertical. Maybe someone else can chime in with information on that particular cancel.
As for the addressee, Rev. C. Ernest Wagner, you may be interested in his biography as follows which explains this piece of mail traveling from Allentown, PA to Oxford, England:
Posted 11/21/2011 8:45 pm
