>>10356740>>10356889>>10357932Lol bootleg-o. I sometimes find weird parts mixed in when I buy some used sets. Picrelated are parts that have this weird 'patent pending' imprint inside them instead of normal serial numbers. They are slightly different in parameters from the normal lego pieces that surround them. The 2x1 brick is a clear bootleg, it does not have the lego imprint on the studs, that was the easiest to weed out of this lot.
