Nice decals on both the 128 and 99 (I have a similar 99, unused as use other machines). Not sure that would have been the 128’s original case, think those came later.
I have a 28 (with less ornate, added later decals) the older version of the 128 and use it for mending, adding Velcro and various other small jobs which I find it ideal for. The long bobbins and shuttles are quite fun and holding less thread is quite useful for this type of use.
Would be lovely if you manage to find the 15k.