Abstract
Comparisons of impressions found in metal, with steel marking stamps suspected of having made those impressions, have normally been based on accidental damage or wear features found on the stamp in question. Fifty steel marking stamps were produced from the same die or hob, and examined to determine if defects present on the face of each stamp could be attributed to the die that produced them or were, in fact, unique to each stamp. The results indicate that the steel from which the stamp is manufactured plays an important role in the final formation of the character. Fine striations present on the surface of the blank stamp are not completely lost when the blank is pressed into the die, and leave fine defects in the completed stamp, unique to that stamp. The study indicates that even when confronted with almost brand new stamps, a toolmark expert can confidently exclude other stamps from having produced the impressions being examined.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
