Trying to ID flatboard stock

[BillJ]

Any help here would be appreciated. Ive had this for a long while and have not had any luck determining its originality. Has a serial number on the bottom side and with the Letter C in script below it. Looks like there was badge on it at one time, note the 4 small holes in the stock. Also in the recess it has "Germany" stamped into the wood. The wood appears to be walnut, but I could be mistaken. The lever appears to be "straw colored".

thanks in advance

Bill