From Aurelio Miccoli on "The Isotta Fraschini"

 https://www.viviwebtv.it/articolo/storie-del-mito-unisotta-fraschini-da-sogno_100581?fbclid=IwZXh0bgNhZW0CMTEAAR0HDuMQFWCpmDxkqUjviGS00lvQ-qcxvfT7WON9xwTMtu5pYzM2dHLCevM_aem_AV1-T_HEFLh3SYiLeHWFZXLLVQderj3f-G-r1KItujgCsp3ySkljQpXzbpOEsdzB637Jeo6ysO47XJJDnDBn7v6w

"To the Order of..."

Another tidbit from Affairs Valentino which took place in the courtroom during the Alberto Guglielmi Valentino v. S. George Ullman hearing. At one point Ullman's lawyer submitted some checks to the judge. He pointed out that these were blank checks signed by Rudolph Valentino and argued that if George Ullman intended to raid the estate bank account, he could have made the check out for any amount. 

The judge refused to enter the checks as evidence by saying George Ullman's integrity was not in question. The testimony regarding this is included in the appeals file and the event was widely covered in the news in Los Angeles on the day it took place. One of those cool looking checks: