Table: lbb1_locomotives
Columns: 1st_lbsc_no
lbsc_name
built
2nd_lbsc_no
1st_sr_no
2ns_sr_no
withdrawn

Question: What is the largest 1st LBSC number with a LBSC Name of northcote?
SQL: SELECT MAX("1st_lbsc_no") FROM lbb1_locomotives WHERE "lbsc_name" = 'northcote'