There is so cheap for reprint a 581 or any Shanghai watch dials in Shanghai. I was told by a vintage watch seller, to reprinting a black 581 is cost about 20rmb and a white one is cost 15rmb. (It depends on the quantity). The reprinting shop are still using the same workmanship to print the dial as most of them are retiled SH watch factory workers. The only way to identify these dial are observing the mod and the dye for what they were using for print.
“A” is a redone 1120 dial which I bought a year ago.
“B” is a original 581 black dial.
“C” is a original (oxidized) 581 black dial
“D” is a original 1523 black dial.
“1” is a redone 24J military dial
“2” is a original 24J military dial
“Z” is a redone 1120 normal dial (you can find the black dye are still on the second -marker)
“X” is a original 1120 normal dial
-- Please compare the dye of A, B & D using on the dial, the original dye dial should be very dark and solid in color and has thickness dye layer. Since the factory painted the dial as the first step and then press the logo/markers onto the paint dial by the sequence of printing, so you can see the edges of logo and makers have extract dye floating on it (see sideview).
-- I have only found black dials on early 581, 611 or color dials on 1523,1524,7120 series, but never found a real thing on 1120 series as well as 623 or 1123 series. For the whole 1120 series, I am suspected the existing of its black dial.
-- Please have a look of the side view of ABCD and check the light reflection of each dial. You could find bunches of light beam reflection on the redone dial. I can only find latest SS4 24J military are using this method to paint their dial (see photos 1 & 2).
- Please check the following are the comparision of Kent provided watches dial
-- Please also note, the way of print the Chinese words "Zuan" (B) in simply way is found form 1964 onward.
