I have a Lesher Beuscher bassoon with two bocals and it is in good shape ill post picture links below
made in Elkhart Indiana
2X6 1/4
the serial # is *3003*
I know that Selmer bought out Beuscher in the late 60's
so i called conn-selmer company and i talk to guy their and he said they only have serial numbers of the last 7 years and they dont have any other information for the serials besides for warranty info.