There is no "Army Aviation Badge" or "Combat Service Medal" per se. In re the former, you seem to be describing the collar/lapel insigne for the Army Air Corps - a two-bladed propeller, vertical, super-imposed on a pair of wings. The enlisted insigne is brass, on a brass disc about 1" in diameter (worn on the left lapel of the service jacket - "U. S." insigne is worn on in same position on right lapel). The officer insigne is the same, larger, without the disc (some are brass with silver propeller). The same insigne, about 2-1/2" in width, wingtip-to-wingtip, is a cap badge worn by Army Aviation Cadets during the war.
The standard enlisted cap insigne (or badge) is a small, brass eagle from the U. S. Coat of Arms on a brass disc about 1-1/2" in diameter.
Air Crew Member breast badge (or "wings") is dull-finish silver, about 3-1/2" in width, wingtip-to-wingtip, with an eagle from the U. S. Coat of Arms centered within a small disc which is, in turn, centered on the wings.
Your man was awarded the Air Medal with 6 Oak-leaf Clusters - a total of seven awards. During the Vietnam War, criteria and eligibility were so liberally revised or "interpreted" that Air Medal awards became so numerous it became necessary to use number devices for depicting successive awards (an aquaintance who served as a helicopter crewman has ninety-four awards!). Numerals denote total awards - in your case, the numeral seven.
The American Theater Medal was authorized for service in North or South America - minimum 30 consecutive or 60 non-consecutive days outside the Zone of the Interior (United States) or permanent assignment of at least one year within the ZI. Over years, millions of these were issued as a matter of routine to almost anyone who had served between 7 December 1941 and 2 February 1946. Now, ostensibly for reasons of economy, it's issued only if eligibility is specified - or verifiable by dates of service - in the individual's records. In most cases, FPRC issues only those awards to which the individual was entitled as of the date of discharge. You must prove eligibility for any others claimed.
I can acquire all of the above, including marksmanship badge, for you. Original-issue Army Air Corps insigne are hard to come by (odd, especially considering that almost a couple million served with Eighth Air Force alone!). I can substitute current-issue Army Aviation insigne but it's not exactly the same. Re the Air Medal. If this is for a display, I can furnish oak-leaf clusters to assure originality. Also, if you're interested, I can furnish seven separate decorations, each with the appropriate number of clusters (First Award, Second Award, etc.); makes a very impressive display The same applies for other decorations (Bronze Star, Purple Heart, etc.).
I've gone into considerable detail here to make certain you know what you'll be getting. My supplier no longer has a return/refund policy so whatever I order, I'm stuck with!I have a seventy-five dollar minimum so it might be more cost-effective to order a complete set of whatever he's authorized.