The count of 14 is of 370WBs in all colors. There is also one 375WB in the register.
Based on casual observation I believe the number of guitars for any particular model listed in the Rickenbacker Register here generally reflects between 5% - 15% (more or less) of the total production by the factory. That's a fuzzy range and I am positive that there are exceptions but at least it is a starting point.
The percentage represented in the Register compared to total production appears higher for "pride of ownership" models such as the various Limited Editions than for standard models, which makes sense - those owners are more likely to register their instruments and, equally important, more likely to find the Register and this forum in the first place. Age, which affects the number of instruments that have survived to be registered, also affects the percentage of representation in the Register.
So, in very round and squishy numbers, one could guess that the company may have made something like 70 - 280 370WB guitars. There is only one Jetglo 370WB in the register as of now, S/N UI 3182. It is dangerous to extrapolate from a single data point but yours is definitely uncommon. It looks great, too!
