The patch looks like a how-6 (LVTH-6) but the circular escape hatches and turret are not accurate. It is possible the means of production (sewing machine) prevented that.
I don't recall seeing this on any jackets or uniform/banner.
I wish I had one of ours…lost in many moves. It depicted an alligator (Smiling Pogo like-cigar in jaws) standing on the turret with boxing gloves in a stance.
2dARMDAMTRAC CO (BnStrength) FMFPAC TI SF
I think we were 1st MARDIV
Dave Selvy Cpl E-4
62-68