[2] In 74 first-class appearances, he took five wickets in an innings on 21 occasions, with career best figures of 9 for 78 in a Currie Cup fixture for Western Province against Transvaal at Old Wanderers in January 1921.

[3] A useful middle/lower-order batsman, Blanckenberg's single first-class century came in December 1923 for Natal against his former team, Western Province, when he scored 171 in a fifth-wicket partnership with Dave Nourse worth 291.

It was at the end of this tour that Blanckenberg played his final first-class match, for the South Africans against CI Thornton's XI at Scarborough.

He has long been rumoured to have been a Nazi sympathiser in the years leading up to and during the Second World War,[2] much of this speculation based on his refusal to shake the hand of Learie Constantine during a Lancashire League game in the late 1920s.

[9] Most cricket sources list him as having died in West Berlin in about 1955, however this remains unverified; historian Robert Brooke believed this theory to have been disproved, and that Blanckenberg emigrated to South America.