Front doesn't look like it is a married piece. Someone took off the back.
Unfortunately, it was damaged or someone wanted to put a computer/tv in it and didn't want to drill holes I am betting!
I can honestly say I haven't seen a Karpen piece like this either. However, it resembles the original tin Karpen tag.
(as seen here -
)
Looks "French" in style. Karpen Brothers (9 of them) were well known for their upholstered furniture! They did make their own wooden frames.... They were renowned for their GUARANTEE of their furniture!