neck-s Buescher alto '20s, '30s, alternatives...

I'd like alternate necks, for other mouthpieces; and I also play without a mouthpiece, as a flute...

In either instance, needing one or more extra necks for my 1930 Buescher alto saxophone.

I seek economy, with value important; so am willing accordingly-seeking repairable or alternative choices too...such as other saxophone makes, after-market necks, etcetera.

A myriad of variables could likely be considered; so advice is welcome, too...

Thanks