I have it as "Stamer Lippisch SG-38", while other sources call it "Stamer Lippisch SG-38 Zögling". Wiki says that the "DFS SG 38 Schulgleiter" (school glider) was developed from the "Stamer Lippisch Zögling" (no model number).
Given this ambiguity and the fact that the two (?) models look identical and serve the same purpose too, I think I can safely award this to you, well done!
Skwinty has control.