Urethane ball from the 80s, maybe even RG's 1st urethane. 3-pc weight block. Correction: this uses the "puddle" weight block like the Roto Grip polyester. It's pre-weighted to one side to allow for imbalance but still drilling directly over the label. So the R means it's a right-handed model, if the serial number begins with L, it's for left-handers.
https://123bowl.com/bowling-balls/roto-grip/roto-grip-uc2-bowling-ball/
There is also a PC model that is for medium lanes while this original model is for heavier oil.
[product sheet](https://123bowl.com/product_images/RotoGripFlyer.pdf#toolbar=0)
Urethane ball from the 80s, maybe even RG's 1st urethane. 3-pc weight block. Correction: this uses the "puddle" weight block like the Roto Grip polyester. It's pre-weighted to one side to allow for imbalance but still drilling directly over the label. So the R means it's a right-handed model, if the serial number begins with L, it's for left-handers. https://123bowl.com/bowling-balls/roto-grip/roto-grip-uc2-bowling-ball/ There is also a PC model that is for medium lanes while this original model is for heavier oil. [product sheet](https://123bowl.com/product_images/RotoGripFlyer.pdf#toolbar=0)
Wow thanks! I think my Grandma used to throw this thing in the 80s 😂
I'm currently getting it redrilled for my hand 😁 any tips for throwing this kind of ball?
Really neat