Table schema:
CREATE TABLE table_name_99 (year INTEGER, points VARCHAR, entrant VARCHAR, chassis VARCHAR)

Question: What is the earliest year with an entry from Rotary Watches Stanley BRM and a BRM P207 with more than 0 points?
SQL: SELECT MIN(year) FROM table_name_99 WHERE entrant = "rotary watches stanley brm" AND chassis = "brm p207" AND points > 0