These two C6 type milk glass figural Christmas light bulbs were made in Japan between 1930 and around 1950. The larger red rosebud is a little over 3 inches high, painted red shading to yellow at the base with four green leaves. There's some paint loss as shown, more on one side than the other. It does not light. Simply wrap a wire around the threads and position on your tree branch to use as an ornament.
The smaller pink and pale yellow cabbage rose bulb is about 2 inches high. It lights up brightly as shown in the last photo and has very good paint.
Rose, Rosebud Figural Glass Christmas Light Bulbs