Bear: I think you have what they call "Slipper Springs"
Mine are "Double Eye" So if one end of yours fits into a slot at the front and bolts at the back- you have slipper springs. Plus yours are 6 leaf. etrailer does carry 6 leaf slipper springs:
Here is a link:
https://www.etrailer.com/Trailer-Sus...ine/E5115.html