1 1/2" Iron coupling

Description

Stay-at-home order during covid results in cleaning the garage.  I found these four metal 1 1/2" couplings that are threaded inside of each end.  The couplings are 2 1/4" tall.  Two of them are marked with a "04" and two with a "05".  (don't know what that means)  There is also one reducing coupling that is marked  1 1/2" on the large end and 3/4 on the small end.  It is also 2 1/4" tall.  I'm quite certain they've never been used but they do feel a bit gritty and they smell kinda oily.
**in the handling time is set at more than 2 days, it means I'm on vacation or getting ready to go, so it is not accurate.  If you need a more precise idea for receipt, please send me a message.  I'm usually able to retrieve those when I travel.