New batteries were installed in the MGB GT on October 14, 1976 by Verbeck Automotive Sales in Pasadena, California. This is the second set of batteries, not bad for 10 years of service. In the notes it is mentioned that the MG has now hit 47,000 miles, so far without any major issues.
Batteries were $34.30 each at the time, likely fairly expensive as 2 of them were required.