20 years ago, we bought beautiful Raphael faucets. When the stems began to be a problem (February, 2012), I visited our local Plumber's Supply and got hot and cold stems for four of my Raphael faucets.
At TMS (Total Maintenance Solutions),
www.tmssouth.com, the part numbers are 3026417 (hot) and 3026418 (cold), and cost $33.86 ea.
I brought the items home and they work perfectly.
The fact that Raphael is ourt of business is of no consequence. Raphael and several other manufacturers used the same generic stems.
TMS may have a location in your town...In Houston Texas they are at 4155 W. Belfort (713) 664-3333.
I hope this helps someone, though too late for the beginning of this thread.