Keil Kraft Flying Scale Model Percival P.56 Provost it does not say on the box the wingspan but we think it is at 19 inches. Please feel free to check that.  Flying Scale Model Keil Kraft Series This kit is one of the ones produced in lower numbers. Kit production based on popularity and this was not as popular as the Spitfire, Fokker Wolf, Tiger Moth and Lysander. This kit has been stored in a polythene bag for many years and is in very very good condition. Theres some tape marks on the back of the box. But it is generally in very good condition and it’s an older series production 
