Ok. Found it. You stumped the panel.

As written in the Piano Atlas: "brand name used by Sherman-Clay, (San Francisco, Ca. USA)
Brand manufactured by various companies. Numbers may conflict with other published data but matches withe series numbers used by Cable, Estey, and Haddorff. Also made by Aeolian and others but no data available"
Haddorff no.s (too many to list. I'll give you 1917)-71500 ending with 1923-107000
Cable Piano Co. 1935-308000 to 1942-315000
Estey Co. 1935-122000 to 1942-133000
Interesting that a console of that style may be from 1917.
Whatever year it is, its not from the 70's. Last date of manufacture is 1942.
Back to the original post, its not an antique rebuilt collectible, so ask around grand or a little more and negotiate from there. That's about as rough a guesstimate I can provide.