a drop from 45 to 35 does NOT require a prior sign alerting one to reduced speed ahead.
PennDot has published standards for signs and lots of other stuff...and a substandard sign is basis to require replacement but the regs are clear a substandard sign is not a defense as to violation of the sign requirement .
IF and that's a long shot, if the sign shows both wordings , then by requlation a reduced speed ahead sign must be min of 500 ' ahead of the new limit ..
And in that context , 200' is too close ....but a poor quality sign won't be a winning point for you.