Year Straube Piano Co (Hammond), Serial No. 85489

https://antiquepianoshop.com/online-museum/schaff-brothers/

Good Piano, buy little on them

https://www.google.com/search?q=schaff+bros+co+baby+grand+piano+serial+number+lookup

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-Details of Ronisch Pianos-
Make Ronisch Made by Pfeiffer / Bluthner Rating (see Key) Estimated Number In UK Year and serial number 1855 -420 1875 -6100 1895 - 23000 1915 - 63200 1935 - 76250 1955 -78300 1966 - 100000 1985 - 185000 2000 - 209960 1 more row

Ronisch Pianos Information ' Roberts Pianos - Oxford

https://www.robertspianos.com > cdetails > Make=Ronisch...
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Ronisch piano serial number reference information. Find out ...

http://www.besbrodepianos.co.uk > pianoserialnumber
Find out the age of your Ronisch piano here. Simply type in the serial number into the box below then click "Calculate". Type in your piano's serial number:.

Jacob Brothers from 1921 according to the link shown:


https://www.mypianofriends.com/i-have-a-jacob-brothers-piano-model-number-57866-but-i-cant-find-any-infor...-107545.html

Quoting:

I have a Jacob Brothers piano model number 57866 but I can't find any infor... by Guest 5 days ago
9
I have a Jacob Brothers piano model number 57866 but I can't find any infor... I have a Jacob Brothers piano model number 57866 but I can't find any information on it? Anyone know anything regarding this model?
Posted on Questions & Answers
Answer
4 days ago C. Anthony
Guru
Blogs: 48
Forum: 16,526
Votes: 420 What type of information do you want? you have the piano in front of you!
specifically what do you want to know?
the SN shows 1921 date.
Have you tuned it this year? If the piano will not hold tune to A=440hz, the value would be 0. However, I would think it would hold 440...but I may not.
Call your local piano technician to check it fully.
CAPReply

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Go to piano appraiser web site

try this link... Straube Piano Company ..or this one... https://www.google.co.uk/webhp?sourceid=chrome-instant&rlz=1C1CHBD_en-GBGB719GB719&ion=1&espv=2&ie=UTF-8#q=Year+Straube+Player+Piano+Serial+No.+30829+built

That would be an earlier 70's Dolphin model. In my market they sell in the $300 range if working 100%.

The C. F. Netzow is listed separately, but the Netzow Piano Co. serial # would lead to it being built in 1915.

Here is a good place to look for your piano by make & serial number.
There are times when your piano name or number is not listed. They can help you find the year your piano was manufactured in most cases. Since you have the name & serial they should be able to answer your question. About the value... they can't possible know without seeing the piano.
http://www.bluebookofpianos.com/serial1.htm

Maybe 1908. That's a Beale Piano Manufacturing Co. number. The Beale Piano Manufacturing Co made several different brands in New South Wales. W. H. Paling & Co was one of many.