if you can measure side plate height and spool width, some Newell experts will know right away. Also might help to put a known reel next to it for scale and shoot pics from a couple angles.
Looks to me like a 338 or 229.
The only one I’ve had fail was when I was fishing for green bass and had tied a crappy one. Lost a tricked out umbrella rig to a tree...
On the salty front, I don’t think I’ve ever broken one. I’ve had far more hooks break than FGs!
This post has me wondering what kind of responses someone would have gotten 10 years ago had they suggested bouncing a rubber flying fish under a kite! Sometimes you just never know. However, I would hope that using baby BFT for bait doesn't gain the same popularity!