public function deleteStamp(Request $request, $bas_id)
    {
        $success = false;

        $collection = \collection::getByBaseId($this->app, $bas_id);

        try {
            $this->app->getApplicationBox()->write_collection_pic(
                $this->app['media-alchemyst'],
                $this->app['filesystem'],
                $collection,
                null,
                \collection::PIC_STAMP
            );
            $success = true;
        } catch (\Exception $e) {

        }

        if ('json' === $request->getRequestFormat()) {
            return $this->app->json([
                'success' => $success,
                'msg'     => $success ? $this->app->trans('Successful removal') : $this->app->trans('An error occured'),
                'bas_id'  => $collection->get_base_id()
            ]);
        }

        return $this->app->redirectPath('admin_display_collection', [
            'bas_id'  => $collection->get_base_id(),
            'success' => (int) $success,
        ]);
    }