Speaking from personal experience, these are extremely nice frames (albeit with a shoddy paint job from new).
I have an SL 989, so this must be slightly better being SLX and with a Cinelli BB (which mine doesn't have). It rides beautifully and is relatively light. You may also find it is fully chromed under the paintwork (I can see the chrome on the BB on your photos where the paint has chipped)
With a repaint, it will be a great frame to keep for a long time.
Speaking from personal experience, these are extremely nice frames (albeit with a shoddy paint job from new).
I have an SL 989, so this must be slightly better being SLX and with a Cinelli BB (which mine doesn't have). It rides beautifully and is relatively light. You may also find it is fully chromed under the paintwork (I can see the chrome on the BB on your photos where the paint has chipped)
With a repaint, it will be a great frame to keep for a long time.