I have the photo referred to. It is of a late 60 Sqn SE5a. Unfortunately the serial number is obscured by the sqdn marking of white bands, but what can be seen is part of a white band, then a 9 in the gap before the next white band, then a 9 again. There is an H on the nose, denoting B Flight. There is a pilot in the cockpit and two groundcrew- one very tall. I'd post an attachment of the photo but I can't be bothered to learn the complicated procedure on the site to do so. I believe the photo came from the late Joe Warne, who was in touch with many ex-60 Sqdn pilots. Re. the model mentioned. I can't understand why anyone would make a model of an SE5a when so little is known about its markings etc.
May I suggest that anyone interested in the markings of British aeroplanes in WW1 would find all the answers in the definitive book on the subject: British Aviation Squadron Markings of World War 1. by Les Rogers, published by Schiffer.