If you can't find one here it looks like Texas Air Salvage has a bunch from an '83 152 that might fit the 150M airframe.

None of them have a price, but similar parts look like they're listed at $26.

https://www.texasairsalvage.com/main_list.php?a=search&SearchFor=inspection+plate


States I landed in N63420 while he was mine:
[Linked Image from visitedstatesmap.com]
KDCY

"Flying a plane is no different from riding a bicycle. It's just a lot harder to put baseball cards in the spokes." - Captain Rex Kramer