Is it an old Wilton staircase stand?
if it's old & no longer for sale on regular cake supply websites I'd try ebay
I found these stairs on the Wilton website:
would like toknow where it came from also....
All I can say is wow. that is some cake stand. Hope you are able to find it.
I would bet that those came from this website..
gorgeous blown glass toppers etc..
edited to add: couldnt find those cake stands.. but the crystal tiers might look nice... http://www.sugarcraft.com/catalog/wedding/Wcakestands-acrylic.htm#cry cas 3tier