Swap of German 5 mark silver coins

I would like to swap two uncirculated 5 mark coins I have in duplicate for uncirculated ones I don't have. The two I am looking to swap are:
https://en.numista.com/catalogue/pieces3432.html Fontane
https://en.numista.com/catalogue/pieces3131.html Schweitzer

I am looking for any of these:
https://en.numista.com/catalogue/pieces3428.html Raiffeisen
https://en.numista.com/catalogue/pieces3430.html Pettenkofer
https://en.numista.com/catalogue/pieces2775.html Beethoven
https://en.numista.com/catalogue/pieces3439.html Gauss

Thanks for the help!

Anyone? Bueller Bueller