Kramer 100 series help

[Ed2Strings]

Ok, just picked this one up andwas wondering what year it'd be from. The serial number starts with SE and ends in 88. Could 88 be the year, I checked vintagekramer.com and couldn't find anything, I also checked older threads. Any help would be appreciated. Thanx........

 

[tplyons]

Perhaps a 720 bass? As far as the year, we know it's before 1990 at least.