OK, someone stole my old and very dear to me, steel folding sawhorses.
These were manufactured by the Hirsch company. They still are in
business and making other products, but I do not think they are making
the Hirsch "Ironhorse Portable Sawhorses" folding sawhorses anymore. I
found a link and tried to order a pair, I received an email back
stating that they are no longer in stock and have been discontinued.
They even stated that the warehouse has none. I've search almost the
entire internet trying to locate a pair. These were invaluable as I do
carpentry work, they were and always will be my favorites. If anyone
at Google answers can find me a pair, I'll also throw in a tip. Good
luck guys.

Hirsch no -- but there are alternatives:
http://www.amazon.com/exec/obidos/tg/browse/-/552642/103-3303810-0667826

Best regards,

Omnivorous-GA (who just completed a project with plastic folding sawhorses)

You can use googles tool called froogle for most hard to find items.  
I searched for your sawhorses and found them here:

http://www.hometownstores.com/detail.aspx?ID=42371&ovchn=GGL&ovcpn=Ace%20Hardware&ovcrn=%22Ironhorse%22%20Portable%20Sawhorses&ovtac=CMP

They were also in stock.   Hope this helps.

Have you tried eBay's Want It Now?

(I personally have an unused one in a box in my basement, as well as
two well-used ones in my garage...)