yes, i believe also the original stamped number is a 1. although, by general appearances, the loop does "appear" as honda 9 font.
without verifying the origin of the loop, the loop is a puzzle is a puzzle. and it's unlikely the origin can or will ever be verified as factory or not.
without the loop, the digit IS distinctive of honda font 1.
it's conjecture if the loop is an accident or if the loop is honda font. with the loop, the number is a 9.
i would say if the loop can be determined to be exactly same as honda font, it's unlikely the loop was put there by accident or coincidence.
Over the years, we've seen several factory modified or corrected vins which support Keith's observation which i support.
until there is more exact comparison and/or measurement of the loop to a factory loop, it's difficult to arrive at a more definite conclusion.