The 1976-P Lincoln Cent had a mintage of over 4.6 billion examples struck, making it extremely common. In MS66 they are a little hard to come by but searching through rolls or mint sets, almost anyone can find one. In MS67 condition they are tougher to find but hundreds of graded examples exist that one can be purchased for a premium. In MS68 they are very difficult to find, these are the best of the best examples for the date and mint mark. Anything grading MS68 or higher should be sent in to get graded as they command a very strong premium.