Nice find. That is a
very early AE. No proofs is absolutely correct, but it probably has a small Swiss cross on the left side of the barrel. Did you check for matching numbers on the small parts? The magazine is incorrect, should be a wooden base commercial with no serial number. In the condition you describe the price may be a bit high, but perhaps the seller is charging a premium for the early serial number and with today's prices it probably isn't a bad investment. Please let me know if it does have the Swiss marked barrel (need the info for my data base - thanks).
P.S. - Photos too if you can
