WWII Japanese Warplane Access Panel

WWII Japanese Aircraft Access Panel
Japanese warplane access panel, measuring approximately 5.5 x 4.5 inches. The panel is painted in green, with darker green overspray concentrated along the upper section—likely a field-applied camouflage, I’m not sure if it is army or navy or which aircraft it came from. The panel features bottom-mounted hinges, consistent with access points for inspection or servicing on Japanese aircraft fuselages or engine compartments.
On the reverse, a U.S. serviceman has penciled:
“Property of JW. Straud T?? Supply”
—suggesting it was recovered and retained as a wartime souvenir by a member of a technical or logistics unit.
Kanji Translation:
“Retention Fitting” or “Securing Hardware”
This label likely identifies the panel’s function as a retention or securing component, possibly for a removable inspection hatch or equipment bay.