Last one I saw for sale went for $500. First one I saw for sale went for $350.
While the Chinese SKS as a group isn't rare, there are harder to find versions of the Chinese genre that are.
Stamped receivers versions from no less than 4 different factory codes
1979/1980 Factory 26 versions with Bakelite hand guards and receiver latch cut outs on the stock
Sino soviet versions
DP marked versions, rumored for Vietnam
And of course the Public Security marked versions. Not many of these in Canada, more in the US though before the ban stopped imports.
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Chinese Public Security Forces were equipped with SKS with a variety of Arsenal markings. /26\ /016\ /416\ [0140] [0141] and [0145] arsenal stamps have been noted as the most common imported to North America, with the vast majority if not all arriving in the US. In addition to the arsenal stamps on the left side of the receiver along with the serial number and "type 56 carbine" Chinese characters, the Security Force rifles were stamped on the right side of the receiver. These markings are called "Gong-An" (not the best pronounciation, but close). These markings are from a /016\ Type 56 with a 18 million serial number. While only /26\ rifles can be accurately dated, this rifle does fit the features of an 18 million /26\, save for having a pinned barrel which would make it quite possibly from 1974. Just a guess though.
Left Side /016\ "Type 56 Carbine" 18 million serial number...
Right Side Security Force "Gong-An"