Not much information on "HART BROS. PRUSSIA". Goin's Encyclopedia of Cutlery Markings has HART BROS. on page 121.
And a nice little dagger sold for $100.00 on May 27, 2023, on a popular auction site.
Do not confuse the HART BROS. PRUSSIA with HART, NEW YORK; HARTFORD CUTLERY, PRUSSIA and others.
Thank you for the additional information.
My 1986 edition of 'Goin's Enceclopediaof Cutlery Markings' unfortunately does not list "Hart Bros".
Page 96 is listing several other " ... Hart ..." named makers, page 121 makers from 'Kane' to 'Kastor'.
I am very pleased of your photoes and the extra vintage sales catalog's page.
I will complete my records with HART on my 'check list' for possible findings on this cutler.
