To be eligible for over the counter sales in CA the pistol you are planning to sell must be one of those two...EXACTLY. Different revision number, barrel length or finish than what is listed? Forget about it.
Have a S&W model 625 in 45acp for sale with an interested buyer in California. He says that the gun is illegal down there. Is a 6 shot revolver a no-no in the State of California now days?? Thanks.
The gun is not "illegal" in CA but can't be sent from out of state into the state via the usual FFL route. Were it already here selling it back & forth between "private party" buyers is perfectly legal.
Re the CA Roster, note the additional "A" and "B" information on the CA DOJ page. As mentioned the gun being sold must be exactly the one OK'd for sale in CA, unless one of the specific exemptions is met such as C&R eligible, intra-familial transfer or single action revolver among others.
A single action revolver isn't what we consider the old Colt SAA or "cowboy" style but would include SA versions of the Colt OMM or Smith Model 14. I've had Smith 25s and a Colt Anaconda recently brought in under the SA exemption. Checking with the receiving FFL is a definite "must do" before taking that approach.