CS622026 Pocket Oiler & Spare Body with original screw on cap

This listing is for a traditional early to mid 20th century vintage thumb pump Pocket Oiler, unmarked, @ 1"W x 3.5"T  x 1/2"D aged patina. Spout screws on and off easily. This were mass produced and used for items such as sewing machines, typewriters, firearms, clockworks, and bicycles of the day.   The listing include a semi complete oiler as shown in image 1 - No Cap, no markings rounded shoulders.  The 2nd picture is a "capped" oil reservoir, no spout, but threaded cap original to the piece.  Both are stamped Made in the USA on the bottom.