This is all I could find regarding the Avro Tutor in South African Air Force service: (info from the SAAF Museum, Ysterplaat, Cape Town)
51 built, 50 written off charge, 1 to technical training. There was 39 at the beginning of 1939.
Serial batches: 701-751
It started off with a 215-240hp Armstrong Siddeley Lynx IV C engine, & when spares ran out, a number were fitted with uncowled Wright Whirlwind engines.
The Tutor was choses to succeed the Avro 504N in the RAF's training schools in 1932, & a total of 394 were built for the RAF.
As a result of a tour of South Africa by Alan Cobham's flying circus & trials by the SAAF, with one of his Tutors, G-AARZ, the Tutor was selected to replace the Avian IV M for SAAF training.
Following the delivery of two Avro built Tutors, a production batch of Tutors was built under license at the Aircraft and Artillery Depot at Voortrekkerhoogte (Roberts Heights) in Pretoria.
The total of 51 is thought to possibly exclude a few more built from spares at the end of the program, & which carried serial numbers of aircraft already written off.
They were used pre war by the Central Flying School (CFS), (established at Zwartkop Air Station in1932) & continued in service mainly with 62 Air School (62 AS) in WWII, with a few issued to other units.
Only one Tutor eventually survived in South Africa & this aircraft, 721, was preserved by the SA War Museum.
It was unfortunately scrapped in the mid 1950's, & the only Tutor is preserved at the Shuttleworth Collection at Old Warden in the UK.
I could not find any colour pictures, but the museum curator advised that they came in silver & yellow.
The only information I could find regarding roundels is from decals..