Here are some more numbers. Some of the unit numbers are out of sequence. I really don't trust GL. :-(
1987, 87K1935, 1040-10517
1987, 87K1674, 1040-10358
1987, 87K2347, 1040-11004
1989, 89K433, 1040-11612
1988, 88K401, 1040-11124
1987, 87K1716, 1040-10442
1987, 87K2268, 1040-10962
1987...