Gon Bops Identification

Saludos Hermanos
I’m having a hard time trying to place a specific time of production on this gon bops (if possible). The side plates should be a dead giveaway for some of you.
I haven’t seen too many gon bops with these side plates. I also can’t tell what type of wood it is. At first I thought it was oak, but it is light as feather and oak tends to be a bit on the heavy side. It also seems to be some type of soft wood. Any information will help
Thanks
oz
I’m having a hard time trying to place a specific time of production on this gon bops (if possible). The side plates should be a dead giveaway for some of you.
I haven’t seen too many gon bops with these side plates. I also can’t tell what type of wood it is. At first I thought it was oak, but it is light as feather and oak tends to be a bit on the heavy side. It also seems to be some type of soft wood. Any information will help
Thanks
oz