The stocks shown below are correct for your Model 29 that most likely shipped in 1961. Regarding coke bottle stocks, when first introduced on the 44 Magnum in 1956, the "special oversize stocks made of Goncalo alves", what would become coke bottle stocks to collectors, referred to stocks with a larger area of checkering than the standard diamond target stocks. Over time, some collectors expanded the definition to include any pair of stocks having any degree of palm swell and flare at the bottom. This includes smooth stocks. I stick to the old definition, but to each his own.

Bill