'48 L-5s with rosewood fingerboards are almost always considered less desirable than all the others with ebony. This could have been a special order but more likely what you might call a "transition" model, although...

This 1948 Gibson BR-9 is in great shape, and sounds awesome too! This amp was clearly well cared for, as the only cosmetic wear is predominately on the back and corners. This was original sold with the BR–9 branded lap...