Go to a securities lawyer or your broker to recommend a lawyer, so they can submit your certificate to the independent lawyer to write an opinion letter for their lawyer(s). You have to pay the independent lawyer a fee for a researched opinion and submit the opinion to the transfer company for acceptance.
The transfer company (agent) should then verify the stock certificate, certificate(s) number(s) and the number of shares deemed accurate and authentic. Then you can submit the documents to your broker for entry in the system.
The broker should then add the company ticker, number of shares and share type(s) to you account. Then you should be able to trade the CLSI stock.
This is how it should work. I believe that TD Ameritrade uses this process, but you have to get an independent lawyer and pay for the process whether the current stock price is worth it or not. The stock lawyers get paid their fees regardless.
Then one has to decide if the price paid for the process may out weigh what one believes the stock may yield.
So, to sum it up, this described process can be compared to making a purchase in a stock (risk), that could be worth something, or it may not yield anything at all except a loss.
In other words, you will be back where you started, undecisive and apparently sour on a stock you "inherited for nothing" and a few bucks under water. (But in a lot of cases, you don't lose unless you sell at a loss).
It also appears to me, you already knew this and were kind of waiting for this stock to make some money before you went to the transfer agent for the process!
Good luck to you though.
GO-CLSI
GO-DR.DOKI
GO-SAM?
