Rock Island and Springfield stampings on parts

[Fred]

Were the sears with the S stamped on the side made by Springfield?
Were Most or all parts made at Rock Island stamped with an ordinance bomb somewhere?

Thanks,

Fred

[John Beard]

Were the sears with the S stamped on the side made by Springfield?
Were Most or all parts made at Rock Island stamped with an ordinance bomb somewhere?

Thanks,

Fred

(1) Yes.

(2) No. Only RIA parts made after mid-1918.

Hope this helps.

J.B.

[Fred]

Thanks John, I learn something neat and new from you each time! Much appreciated!