"overall: Height: 1.380 inches (3.505 cm) | Width: 1.380 inches (3.505 cm)"@en . . "The badge was donated to the United States Holocaust Memorial Museum in 1996 by Mark Esterman."@en . . . "circular; iron alloy; recto: raised images; upper left corner,\"1 MAI/193\"; lower left, plow; upper right, hammer and sword; lower right, Nazi German National Symbol; verso: safety pin attached mechanically to badge; raised text,\"SCHANTZ & EPPERLEIN/ALTENHAMMER/OBP\""@en . . "irn11768" . "Nazi Labor Day badge"@en . . "No restrictions on access"@en . "No restrictions on use"@en . "1936 May" . .