Hi, I need some help!

I was wondering if anyone knows any information about a guitar I recently purchased. It is a mid-eighties made in America Strat with a E4 + 99 + three digits serial number. It has one humbucker pickup by the bridge, 2 tone and 1 volume w/black nobs, black pick guard, and black body. Also the "Fender" on the headstock is black font, and the 'stratocaster' type has a (c) to the left.

With the help of an internet database I narrowed its production date to 1984-1988. However, can anybody help me better pinpoint the year (ie built 1987-88, ect). Let me know if a pic would be helpful.. I appreciate any guidance.