✅ No, we couldn't find enough information regarding transforming a Mason jar into a vintage 1950s diner-style sugar pourer on authoritative news outlets. However, here's what we found:

1. Mason Jar Sugar Dispenser on Domestically Blissful provides a DIY guide for making a sugar dispenser using a Mason jar, but it does not specifically mention transforming it into a vintage 1950s diner style. The guide focuses on decorating the jar with scrapbook paper and using an emptied salt container to create a new lid. (Trust Score 6/10)

- Quick summary: The article provides a step-by-step DIY guide for making a Mason jar sugar dispenser but does not mention transforming it into a vintage 1950s style.

2. Having Fun with Mason Jars on From My Carolina Home discusses the history of Mason jars and their evolution but does not provide any information on transforming them into a vintage 1950s diner-style sugar pourer. (Trust Score 5/10)

- Quick summary: The article focuses on the history and evolution of Mason jars but does not address the specific transformation mentioned in the query.

3. Sugar Dispensing Stainless Steel Lids for Mason Jars on Mason Jar Lifestyle offers a product that can be used to make a sugar dispenser but does not provide any DIY guide or information on transforming a Mason jar into a vintage 1950s diner style. (Trust Score 4/10)

- Quick summary: The product description focuses on a stainless steel lid for Mason jars but does not address the transformation mentioned in the query.

These sources do not provide any information or guides on transforming a Mason jar into a vintage 1950s diner-style sugar pourer, suggesting that the specific claim might be inaccurate or not supported by the available information.