OMG I have that same model bow except mine is 40#s. It was my grandfathers. It is white glass on one side and green glass on the other. From what I have found out it was made in the mid 60's. Locksley was based out of arkansas and was their own company at one point, then they were taken over by Ben Pearson, but still sold them under the Locksley name. When I get home I will take a photo of mine and post it for you. Here is a link where I found out info about mine.
http://www.archeryarchives.com/locksley.htm