other Marder 1 are listed on what they are based on such as Hotchkiss but on this one we don't know as we can't see the wheels so Alkett seems more appropiate, again 3 french tanks were used for this conversion, Hotchkiss, FCM and Lorraine

Marder 2 and 3 are actually listed with Alkett as producer, this were based on german tanks

https://www.imcdb.org/vehicle_435038-Alkett-Marder-II-1942.html