Need to ask about a lot?

GB.GEORGE V - 1933-34 RAILWAY AIR SERVICE COVERS COLLECTION presented on stock book pages, we see an interesting selection of Railway Air Services illustrated covers plus several 'Mail Lists' recording the weight of mail carried between various stops inc a 1933 Birmingham to Plymouth cover with 'G.W.R. AIR MAIL' 3d label tied by 'G.W.R.' cancel. An interesting collection (23 covers & 8 mail lists)