I see from jpc.de that the Violin Concerto No.4 in D major, 'Concertstück' (1864), by Hubert Léonard (1819-90) is due out on the Pavane label, although the recording appears to date from 1972...
http://www.jpc.de/jpcng/SESSIONID/fb2168f227aec203db41480801eeeed3/classic/detail/-/art/Hubert-Leonard-Violinkonzert-Nr-4-op-26-Concertst%FCck/hnum/1045882 (http://www.jpc.de/jpcng/SESSIONID/fb2168f227aec203db41480801eeeed3/classic/detail/-/art/Hubert-Leonard-Violinkonzert-Nr-4-op-26-Concertst%FCck/hnum/1045882)
http://www.amazon.com/Lekeu-Symphonic-Etude-No2-No1/dp/B000001MSP/ref=sr_1_4?ie=UTF8&s=music&qid=1242426618&sr=8-4 (http://www.amazon.com/Lekeu-Symphonic-Etude-No2-No1/dp/B000001MSP/ref=sr_1_4?ie=UTF8&s=music&qid=1242426618&sr=8-4)
http://www.amazon.com/Lekeu-Symphonic-Etude-No2-No1/dp/B000001MSP/ref=sr_1_4?ie=UTF8&s=music&qid=1242426618&sr=8-4 (http://www.amazon.com/Lekeu-Symphonic-Etude-No2-No1/dp/B000001MSP/ref=sr_1_4?ie=UTF8&s=music&qid=1242426618&sr=8-4)
Not at those prices!!!
I just bought a secondhand copy on Amazon.co.uk for £5.91.