I have these Konami MSX cartridges for sale. Please mail me at tako[at]zandink.org for info and photos.
Rc712 Circus Charlie cart: perfect box: na manual: na. price: EUR 25
Rc753 Usas cart: perfect box: na manual: na. price: EUR 40
Rc760 King's valley II cart: perfect box: na manual: na. price: EUR 40
Rc000 Green Beret cart: perfect box: na manual: na. price: EUR 25
Rc701 Antarctic Adventure cart: very good box: na manual: na. price: EUR 25
Rc725 Yie ar Kung-fu cart: perfect box: na manual: na. price: EUR 25
Rc744 Vampire killer cart: good box: na manual: na. price: EUR 30
Rc720 Konami's tennis cart: very good: box: na manual: na. price: EUR 25
Rc700 Athletic land cart: very good box: na manual: na. price: EUR 25
Rc742 Nemesis cart: perfect box: perfect manual: perfect. price: EUR 40
Rc749 The Maze of Galious cart: very good box: bad manual: bad. price: EUR 40
Rc752 F-1 Spirit cart: perfect box: very good manual: very good. price: EUR 50
Rc730 Road Fighter cart: very good box: bad manual: very good. price: EUR 30
Rc743 Penguin Adventure cart: very good box: good manual: na. price: EUR 40
Rc737 Yie ar Kung-Fu II cart: very good box: good manual: good. price: EUR 40
Rc732 Konami's Soccer cart: good box: very good manual: na. price: EUR 30
Rc717 Hyper Sports 2 cart: perfect box: good manual: very good. price: EUR 30
Rc742 Nemesis cart: good box: bad manual: na. price: EUR 20
Rc745 KingKong 2 cart: perfect box: good manual: very good. price: EUR 75
na means not available..
I can make a picture of the goods if you like. Just ask.
Happy buying 
