1950 Triumph Thunderbird . The 1950 Triumph Thunderbird was not only the first Thunderbird, but the first of the 650's and it began a long… | Instagram
![1950 Triumph Thunderbird for sale on BaT Auctions - closed on August 6, 2022 (Lot #80,743) | Bring a Trailer 1950 Triumph Thunderbird for sale on BaT Auctions - closed on August 6, 2022 (Lot #80,743) | Bring a Trailer](https://bringatrailer.com/wp-content/uploads/2022/06/1950_triumph_thunderbird_img_1959-9-59830.jpg)
1950 Triumph Thunderbird for sale on BaT Auctions - closed on August 6, 2022 (Lot #80,743) | Bring a Trailer
![Bonhams Cars : The Anthony R. East Classic Motorcycle Collection, 1950 Triumph 499cc Speed Twin Frame no. 1439NA Engine no. 5T 1439NA Bonhams Cars : The Anthony R. East Classic Motorcycle Collection, 1950 Triumph 499cc Speed Twin Frame no. 1439NA Engine no. 5T 1439NA](https://images1.bonhams.com/image?src=Images/live/2023-07/03/25355493-56-1.jpg)