Question can't be answered without knowing who made it and when. Even then, they could just be assembly marks.
78 Cards in a Tarot Deck
A c 78 and 79 would constitute a C+
pythons have markings but the python is to hairy for any 1 to c the markings
a 78 is considered a b
78 F = 25.55... C
351.15 kelvins
Diamond Arms shotguns were made by a variety of manufacturers in the US (c. 1900-1955) and Belgium (c. 1890-1915). Other markings on the gun may provide clues to make a more positive identification (or may not).
78 Cards in a Tarot Deck
39 out of 50 = 78%.. 78% in letters = a c+
b/c ya like pusssys lke i do there umm wett!
78°C converts to 172.4°F
78 C = 32 +(78 x 1.8) F