#301 released as a single model 1964-1973, and as #304 with the Buck, Doe and Fawn from 1964-1965. Released again as a family set #3123 from 1974-1997. Models originally had the round Breyer Molding Co Copyright Stamp, then around 1970, the USA Stamp was added. Models in the first 3 months of 1997 had bicolor eyes. On the 1997 Retired List.
The #304 set was available through JC Penney in 1964-1966 and again in 1976.