Names listed in the Europe Piano Atlas include Acrosonic, Aeolian, Albert, Allison, Anelli, Angelestein, Angerhofer, Apollo, Arnold, Arirang, Aristocrat, Atlas, Bach, Bachmann, Baldur, Baldwin, Bathur, Barratt & Robinson, Baumbach, Baumgardt, Bechstein, Bentley, Berdux, Berger, Berry, Bieger, Biese, Billberg, Bluthner, Bosendorfer, Bord, Breitkopf & Hartel, Brinkmann & Goebel, Brinsmead, Bristol, Broadwood, Brother, Burgasser, Burger & Jacobi, Fibiger, Cuawberghe, Challen, Chassaigne, Chappell, Choiseul, Christensen, Chu-Seng, Collard, Conover, Cramer, Danemann, Dietmann, Markennamen, Dohnert, Doina, Dorner, Donath, Duck, Duysen, Eavestaff, Ecke, Ehrbar, Eisenberg, Ekstrom, Elcke, Erard, Estey, Euterpe, Fazer, Feurich, Fibich, Finger, Forster, French, Fuchs, Furstein, Gaveau, Gerbstadt, Geyer, Giles, Gillot-Straube, Gors & Kallmann, Goetze, Grand, Grotrian, Guckel, Gulbransen, Gunther, Gustaffson, Haegele, Habn, Hain, Hals, Hamburger, Hamilton, Hanlet, Harwood, Hautrive, Hellas, Heintzmann, Heppel, Herrmann, Herz, Horugel, Hofberg, Hoffmann, Hofmann, Hofmann & Czerny, Hofmann & Kuhne, Hopkinson, Hornung & Muller, Howard, Hupfeld, Ibach, Inbal, etc.. Names include Bechstein, Biese, Bluthner, Bord, Dogel, Dorner, Duysen, Feurich, Forster, Grotrian Steinweg, Hofberg, Ibach, Irmler, Kaps, Krauss, Lindholm, Lipp, Mannborg, Quandt, Ritmuller, Schiedmayer, Schimmel, Schwechten, Seiler, Steinway, Thurmer, and Zeitter & WInkelmann.
I am grateful to the Castle Museum, York, for lists of piano serial number dates compiled by Mr D. Most of these lists end around 1935-6, so we imagine that they were collected at that time.
Books which give number dates are known as "Piano Atlases" after the original - Michel's Piano Atlas, which later became the Pierce Piano Atlas.
for British pianos are listed in date order near the bottom of this page.
A growing number of websites offer apparently simple dating of pianos by their serial numbers.
On the Piano History If you open the top of a piano and peer inside, you will often find one or more numbers in there.
Sometimes, they are harder to see, and may be underneath a grand.
I used to tune one of these for an old lady until, unable to sell it, she stored it in the loft, where it probably fell to bits rather quickly!