I've been trying to read the serial plate of an old 1975 Sunray pleasure
boat but all the plate detail has faded away. What's visible is the boxes
with the stamped numbers. Similar to this

2 rows of boxes, 3 boxes on the top, and 2 boxes on the second row (bottom).

First box (top row) contains 3 letters and six numbers together
Second box (top row) contains two numbers being 75, hence the year
Third box (top row) contains "Sunray Boats Inc"
First box (bottom row) contains 4 numbers
Second box (bottom row) contains two letters, a dash, and then 3 numbers.

What I want to figure out is the model and serial number.
Would it be wise to say that the first top box is the serial number with the
9 characters?
Would it also be safe to say the second box on the second row contains the
model? in this case SV-155

What do you guys think?

Thanks