<VV> Oil Pressure Gauge Question

[ohareck at aol.com]

 Just got our 65 Greenbrier on the road after a two year plus restoration. Prior to letting it sit for the two years (I started it periodically) the Clarks oil pressure gauge read about 25 lbs and would vary pressure from idle to driving. Now it reads about 50 and doesn't seem to move. Could the sender have gone bad (4 year old gauge)? Any suggestions would be appreciated. Thanks, Charlie