They will be Ohlins PCVs - I had these on my Supra when it was first imported. I'm not sure what the spring rates were, but they were a bit firm for UK roads, but still very well damped.
However, I did similar to you and naively replaced them with brand new Tein Flex (I won't bore you with the reasons why!) - it was not a good move, and I regretted it for every mile after! Not saying you would have the same thoughts, and not comparing Tein Flex from 15 years ago to Meister R's now, but I would seriously look at getting the Ohlins rebuilt. Give Aurok a call, you may be surprised at the price for a rebuild:
In Colemore in the United Kingdom, you can find our distributor Aurok Ltd | Öhlins Center. Find their contact information and ask them about our car parts!
www.ohlins.com