Yes, AppleShare 1.0 was introduced around System 3.3/Finder 5.4 in January 1987, 3 months before the SE & Mac II were introduced, with a corresponding update to AppleShare 1.1

I specify AppleShare "Server" 1.x to distinguish it from the v1.x Workstation software which is fairly common around the net. AFAIK, it was simply called: AppleShare 1.0 and the client software: AppleShare Workstation 1.0