Quote Originally Posted by svaglic View Post
http://www.seiyajapan.com/pages/the-...of-grand-seiko
here is one write up to verify the Grand Seiko cost of the day.

the link states: The cost for this watch was equivalent to 300,000-400,000JPY today.

So roughly 2500 GBP

would think 250 in 1960 would be even more than that in todays value

at least according to https://www.measuringworth.com/ppoweruk/