Eastern Arms was a Sears Roebuck trade name. Manufacturers included Meriden Firearms, Iver Johnson A&C, Stevens/Savage Arms, and Crescent Firearms.
I can't find a cross-reference for that number, but Eastern Arms was a trade name used by Sears Roebuck. Most of the shotguns were made by Stevens/Savage.
remington
Eastern Arms Co. was the trade name placed on inexpensive shotguns and revolvers made for Sears. The Sears part numbers 101.XXX were made Savage/Stevens although the 101.18 isn't listed on the site I visited. You may be able to match your model using a gun values book for the photos or going to the Numrich web site (gunpartscorp.com) and looking at the Savage/Stevens pictures.
I was informed that' some Morsel shotguns were made by Navy Arms Co.
Turn of the century
American Arms imported Spanish shotguns manufactured by Zabala Hermanos, Lanber, and Indesal. Italian shotguns were also imported and mfg. by Stefano Fausti (Models Silver, Waterfowl, and Turkey Special).
Chances are it was made by HD Folsom or Crescent.
Late 1800-early 1900
savage,springfield arms co.
Beebe shotguns were made by one of two two manufacturers. Harrington & Richardson Arms Company made them from 1871 to about 1975. Hopkins & Allen made shotguns from 1868 to 1915.
The Eastern Arms 101.1 12-gauge shotgun was produced in the early 20th century, specifically around the 1920s. Eastern Arms was a brand associated with the J. Stevens Arms & Tool Company, and the 101.1 model was part of their line of shotguns. However, exact production years can vary, so it's advisable to consult specific firearm records or collector resources for more precise information.
'1929' is going to be a patent date, not a model number. Eastern Arms Co was not an actual manufacturer, it was a brand name used by Sears on guns they marketed, generally made by the Stevens Arms Co. Value is strictly based on its usability as a shooter, and single-barrel 16ga shotguns will generally sell for less than $100. 1929 is a model number marked on Stevens/Springfield shotguns.