Hi Again peejay,
It seems to me that the(since late 2015)generic rasagiline meds are all rasagiline(as tartrate).The original Teva produced meds are rasagiline(as mesilate).
Through a technicality,Teva managed to acquire an extension to the sole manufacture of rasagiline(azilect).This is why they have had sole reign with the drug for so long.However,now the drug has been released to other pharmaceutical organisations.The design,shape,texture etc,may vary.The way the product is stored or shelf life of the product can be enhanced by various techniques during the manufacture and processes with the actual salts.I think this is the only difference in the tablets you have now been given.The actual drug that serves its purpose is still the same.
This is how i see it.However,like yourself,i would feel much better sticking to the Teva version i have been on for the last 6 1/2 years.
All the best