Vintage Superb Minerva 10 second timer 50mm in diameter In Excellent Condition

Vintage Superb Minerva 10 second timer 50mm in diameter. This beauty a find it in state sale . Their attention to detail is phenomenal. Never had a 10 second counter from Minerva before so happy to bring this to the shop. Many of these 10 second counters were used in the electricity supply industry but some are trying to convince