The number you show is a serial number, not a model number. According to a list of serial numbers printed by Chandler & Price in 1964, press number B51396 was a New Series 8 X 12 manufactured in 1913. I don’t see the 96 part of the number in your picture. Perhaps it is just too faint to photograph well. If the number is B513, then it is an Old Series 8 X 12 press manufactured in 1905.
The number you show is a serial number, not a model number. According to a list of serial numbers printed by Chandler & Price in 1964, press number B51396 was a New Series 8 X 12 manufactured in 1913. I don’t see the 96 part of the number in your picture. Perhaps it is just too faint to photograph well. If the number is B513, then it is an Old Series 8 X 12 press manufactured in 1905.