  We present new observations of the plerionic supernova remnant 3C58 with the
VLA at 74 and 327 MHz. In addition, we re-reduced earlier observations at 1.4
and 4.9 GHz taken in 1973 and 1984. Comparing these various images, we find
that: 1. the remnant has a flat and relatively uniform spectral index
distribution, 2. any expansion of the remnant with time is significantly less
than that expected for uniform, undecelerated expansion since the generally
accepted explosion date in 1181 A.D., and 3. there is no evidence for a
non-thermal synchrotron emission shell generated by a supernova shock wave,
with any such emission having a surface brightness of <1 x 10^(-21) W / (m^2 Hz
sr) at 327 MHz.
