The "Butterfly Gold" pattern was introduced in 1972. 
Material: Made of glass, likely borosilicate for vintage models.
Design: Features a yellow background with white floral and butterfly patterns.
Shape: Oval with handles on either side for easy handling.
Size: 2.5 quart capacity.
Vintage Appeal: Often collected for its nostalgic value and association with family memories.
Oven-Safe: Vintage Pyrex is generally oven-safe, but avoid extreme temperature changes.
Manufacturing: Made in the USA.
Care: It is recommended to check if it is safe for microwave use.