I’m trying to date my Gibson L-48 I believe it’s somewhere in between 1947 -1959 . It has a natural finish, not the sunburst model. The serial number on the inside only reads “3636”. It does not have any other serial numbers printed, something might have faded away over time. Apparently the peg head number is 4543. I’m no expert at dating these old Guitars and was wondering if someone might have some info for me. Thanks