Hello Newbie here, today I picked up an old 3 Speed, JC Higgins bike (made in Austria) that I would like help with the model name and date of manufacture. The numbers under the crank housing are as follows(I think)503 46420 & 1507036(the 5 may be a 6). I found no other numbers on the bike. No numbers behind the brake calipers or on the rear hub or right handle bar or on the drop downs by the rear axle. I have included pictures which I hope help I.D. the bike. I would also like to know what type of oil goes in the rear hub and crankset(there are oil ports at both locations)? Any help is greatly appreciated.
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