How were the wood handles on newly manufactured M24 grenades finished? Were they left plain, treated with oil, varnish or did it depend on the manufacturer? I recently picked up an excellent handle made by brb in 1942 and it is completely bare wood. I'm wondering if the finish is missing due to age/storage conditions or if this is correct for this manufacturer. I also have a minty handle for a smoke grenade and it clearly has been treated with something that has left a subtle sheen. Any ideas?