Bath faucets: restricted water flow

Hi,
I belong to a little brick bungalow in the midwest, built in '54, original (copper) bath plumbing.
Very recently I notice severely restricted water pressure from the bath wash basin. Only one output spout. Very little water flow from either hot or cold. Doesn't seem to increase when I open both.
I replaced the washers some months ago. Last week the screw and washer on the cold side came loose. I fished the screw and washer out, checked for blockage, replaced the screw. It was after that that the restricted flow became very noticeable.
Water flow in all other parts of the house is fine.
What commonly causes such a problem?
TIA, Puddin'
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I had the same problem do you have a shower too? I have a Chicago faucet from the water supply a small piece of washer logged where the hot and cold water mixed how the plumber fixed this was. Attached the water flow and from the spicket where the water comes out took the shower head off then the washer that was plugging the water flow come out and the pressure was back to normal.
hope that helped
mike
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Sure.
OK ...

Hmmmm. You might've lost po' me.
You mean he connected, say, a hose from the shower fixture to the spout on the wash basin, used the water pressure from the shower to clear an obstruction in the wash basin spout?

A bit more explanation/detail might be helpful.
Thanks, Puddin'
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Sorry that I was not too clear, try this
take the spout off your tub take off your shower head connect the water supply from your sink to where the spout was then turn on the water from your skink see if it will push out what ever is blocking your tub.
that's what the plumber did for me and it worked.
mike
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