Bzzzt. Not a symref.
$ perl -e'my $fh;open($fh, "< foo") or die $!; print "$fh"'
GLOB(0x804b3f8)$
Nothing wrong with OP's lexical filehandle. It is good practice to localize a global handle such as you recommend within some scope. Then you don't need to worry about name uniqueness.
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