SHANHAIKUAN German post, only from 1.9 to 30.11.1901 possible cancellation, clear on vertical pair 2 Mark dark red crimson, apart from one transparent perf tip in good condition, expertized Bothe BPP and photo expertize Steuer BPP (20221), catalogue value after-tax for the cheaper f colour already 1.800.- - on the e colour by far rare!