GS has a deep vintage and neo-vintage catalogue. If hi-beat is what you are looking for, you might want to check this link out, where you'll get most of the releases over the past two decades: https://www.theseikoguy.com/grand-seiko-9s85/; then for proper vintage, have a look at this (got a 6146-8000 from 1969 Hibeat running at a sweet plus or minus eight second a day) https://www.theseikoguy.com/grand-seiko-vintage/
https://www.grand-seiko.com/uk-en/collections/SBGR253 yep 3500 GBP in the UK and you get the single gs branding instead of the double whammy gs+seiko that I have and love to be honest matter of priority, taste and purse.
This account is verified. WatchCrunch has confirmed that this account is the authentic presence for this person or brand.