Ok, I have a chestnut canoe at least 45 years old, its 16 feet long, has a beam of 36 inches, depth of 14 inches and has slatted seats. So far sounds like a prospector, However, the ribs are 11/2 inches with 11/2 inch spacing, like a pal. It has two thwarts. Any suggestions or guesses as to what model it is.