The abbreviation "ob" in front of a date stands for "obstetric," typically used in medical contexts to refer to the date of a person's last menstrual period or the date of delivery in obstetrics. It is commonly found in medical records related to pregnancy. For example, "ob 01/15/2023" would indicate the relevant obstetric date.
obsolete
The meaning for 'ob' are: contrary, against, towards or in the way of, against
on account of
OB stands for Ostby and Barton
the prefix ob means against something e.g objection, obstacle, obstruction
"OB" stands for Ostby & Barton
Oh boy
Observe
opening batsman
The "1847" date on the back does not mean the piece was made that year. Many Rogers pieces have the company founding date on them.
"if" or "whether"Ex: Ich weiss nicht, ob ich kann. I don't know if/whether I can.
Abraham Lincoln's on the front of the coin, and he was born in 1809. The date was put on the back for his bicentennial anniversary.