Pin Tumbler Padlocks
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Click to Enlarge Image "RALSTON PURINA". Brass case. Made for: Ralston Purina, St. Louis, Missouri. Mfg by: Best.
"Courtesy Neil Pylant" 
4612
Click to Enlarge Image "R&E Co PAT. JULY 30. 1878.". 2 7/8" high x 1 7/8" wide x 5/8" deep. Brass case. Brass shackle. Mfg by: Russell & Erwin Mfg. Co. William H. Bramble Patent #'s 206528.
"The Michael Stuart Collection" 
5035
Click to Enlarge Image "RUSSWIN". 1 15/16" wide. Brass case. Mfg by:  Russell & Erwin Mfg. Co.
"Courtesy Neil Pylant" 
2362