I would line it back to .32 WCF, find a tang sight, and get the SST fixed. It is an interesting rifle as is, but I do not think you'd recover your costs if you went for a proper restoration. That generally requires a rifle with a number of special features.

Years ago I owned an octagon top, thick side, high wall with a serial number that I remember as being approximately 200. The barrel was marked "Browning Bros., Ogdon, U.T." I wondered if that might have been part of the payment to Browning for the patent rights.