@Lanolin
I know about your "brainbox" thing. They didn't pick out a special name for me, but at the time I wished I were a bit of both, athletic and brain. The athletic was never to be and the brain was the main thing I could see that God had given me.
I wasn't smart enough to know what to do with what I had. Is my previous sentence a contradiction?
On contacting the stamp dealer, just take it slow. There are some good honest stamp dealers, but they are frail people like the rest of us. Some of them would be dishonest. Then again, nothing ventured, nothing gained. If personal profit is not your concern and you don't want to be bothered or are not interested in checking the values yourself, what can you lose? If you lived across the street I would be happy to look at them for you, but, that is not even close to being an option.
On the staying home thing, we may indeed have to at times grin and bear it while staying where God has placed us. I traveled a lot around the world prior to my marriage [45 years this next June], but that was as a member of the military in the US Army and as a student for myself. I was not serving God at all at the time.
I studied Spanish and German with no idea what I would use them for... I did use them as a secondary part of my secular job but generally speaking it was almost never really for God.
I have used the Spanish quite a bit at times and places, but except for spending a year in Germany as a student a couple of years prior to my marriage, my use of the German has essentially been limited to reading my Luther Bible.