Great Britain to Germany: Postal history lot featuring 5 items

• 1928 registered military cover from Great Britain, featuring a mixed combination of horizontal pairs from the 1924 KGV NB15.
• 1930 airmail cover from Edinburgh to Germany, bearing SG 420d stamps valued at £225.
• 1933 airmail cover from Great Britain to Germany with a mixed franking, including a 1924 SG 420dw 1½d Red-brown block of 4 and two combination horizontal pairs from the booklet pane.
• Two 1937 airmail covers from London to Germany, each franked with SG464 horizontal combination pairs of 1½d stamps, along with two advertising labels.