Is there any way to tell if an AC dryer is old or new?  The guy who put in
my new compressor six weeks ago said he installed a new dryer, but when I
pulled it out today with the AC hoses it didn't look very new.  The threads
on the connectors are rusted and the  paper label is smutzed up and worn and
torn (which I guess could be from the bracket).  Otherwise it doesn't look
very dirty, but I don't like the rust.

I can't find anything that looks like a date code.  The brand name is Parker
and there's a number on the label that is either 091003 or 094003, and 129
is stamped into the bottom of the dryer.

Thanks,

deb